2 unchanged sentences
BALANCE SHEETS
+Added: September 30,
Current assets
6 unchanged sentences
Oil and gas properties, using the full cost method
−Removed: Accumulated depreciation, depletion
−Removed: and amortization
+Added: Accumulated depreciation, depletion and amortization
( 29,559,992 )
23 unchanged sentences
2,171,566 and 2,143,666 shares issued;
−Removed: and, 2,081,666 and 2,076,666 shares outstanding as of June 30, 2021 and March 31, 2021, respectively
+Added: 2,104,566 and 2,076,666 shares outstanding as of September 30, 2021 and March 31, 2021, respectively
Additional paid-in capital
Retained earnings
−Removed: Treasury stock, at cost ( 67,000
+Added: Treasury stock, at cost ( 67,000 shares)
Total stockholders’ equity
−Removed: Total liabilities and stockholders’
+Added: Total liabilities and stockholders’ equity
accompanying notes are an integral part of the consolidated financial statements.
1 unchanged sentence
STATEMENTS OF OPERATIONS
−Removed: the Three Months Ended June 30,
+Added: Three Months Ended
+Added: Six Months Ended
+Added: September 30,
+Added: September 30,
Operating revenues:
7 unchanged sentences
Operating income (loss)
−Removed: Other income (expense):
+Added: Other income (expenses):
Interest income
−Removed: Net realized and unrealized loss on derivative contracts
Interest expense
+Added: Loss on derivative instruments
Net other expense
−Removed: Income (loss) before provision for income taxes
+Added: Income (loss) before income taxes
Net income (loss)
2 unchanged sentences
Weighted average common shares outstanding:
−Removed: accompanying notes are an integral part of the consolidated financial statements.
+Added: accompanying notes are an integral part of
+Added: consolidated financial statements.
Energy Corporation and Subsidiaries
STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY
−Removed: Stock Par Value
−Removed: Paid-In Capital
+Added: Common Stock Par Value
+Added: Additional Paid-In Capital
+Added: Retained Earnings (Losses)
+Added: Treasury Stock
Stockholders’ Equity
3 unchanged sentences
Stock based compensation
+Added: Balance at September 30, 2021
+Added: $ ( 346,001 )
+Added: Common Stock Par Value
+Added: Additional Paid-In Capital
+Added: Retained Earnings (Losses)
+Added: Treasury Stock
+Added: Stockholders’ Equity
Balance at June 30, 2021
$ ( 346,001 )
−Removed: Stock Par Value
−Removed: Paid-In Capital
+Added: Issuance of stock through options exercised
+Added: Stock based compensation
+Added: Balance at September 30, 2021
+Added: $ ( 346,001 )
+Added: Common Stock Par Value
+Added: Additional Paid-In Capital
+Added: Retained Earnings
+Added: Treasury Stock
Stockholders’ Equity
1 unchanged sentence
$ ( 346,001 )
−Removed: Net income (loss)
+Added: Issuance of stock through options exercised
Stock based compensation
+Added: Balance at September 30, 2020
+Added: $ ( 346,001 )
+Added: Common Stock Par Value
+Added: Additional Paid-In Capital
+Added: Retained Earnings
+Added: Treasury Stock
+Added: Stockholders’ Equity
Balance at June 30, 2020
$ ( 346,001 )
+Added: Issuance of stock through options exercised
+Added: Stock based compensation
+Added: Balance at September 30, 2020
+Added: $ ( 346,001 )
SHARE ACTIVITY
1 unchanged sentence
Balance at April 1, 2021
−Removed: Balance at June 30, 2021
+Added: Balance at September 30, 2021
Common stock shares, held in treasury:
Balance at April 1, 2021
−Removed: Balance at June 30, 2021
−Removed: Common stock shares, outstanding at June 30, 2021
+Added: Balance at September 30, 2021
+Added: Common stock shares, outstanding at September 30, 2021
accompanying notes are an integral part of the consolidated financial statements.
1 unchanged sentence
STATEMENTS OF CASH FLOWS
−Removed: the Three Months Ended June 30,
+Added: the Six Months Ended September 30,
Cash flows from operating activities:
6 unchanged sentences
Amortization of debt issuance costs
−Removed: Change in fair value of derivative instruments
Changes in operating assets and liabilities:
−Removed: (Increase) decrease in accounts receivable
−Removed: Decrease in prepaid expenses
−Removed: Increase in prepaid asset – option contract
+Added: Increase in accounts receivable
(Increase) decrease in right-of-use asset
+Added: Decrease in prepaid expenses
Increase in accounts payable and accrued expenses
Settlement of asset retirement obligations
−Removed: Increase (decrease) in operating
−Removed: lease liability
+Added: Increase (decrease) in operating lease liability
Net cash provided by operating activities
1 unchanged sentence
Additions to oil and gas properties
+Added: Drilling refunds
+Added: Investment – cost basis
+Added: Proceeds from sale of oil and gas properties and equipment
Additions to other property and equipment
−Removed: Proceeds from sale of oil and
−Removed: gas properties and equipment
Net cash used in investing activities
1 unchanged sentence
Proceeds from exercise of stock options
−Removed: Reduction of long-term debt
Proceeds from long-term debt
+Added: Reduction of long-term debt
+Added: ( 1,455,000 )
Net cash (used in) provided by financing activities
6 unchanged sentences
Asset retirement obligations
−Removed: Operating lease – right of use asset and associated
−Removed: accompanying notes are an integral part of the consolidated financial statements.
+Added: Operating lease – right of use asset and associated liabilities
+Added: accompanying notes are an integral part of
+Added: consolidated financial statements.
Energy Corporation and Subsidiaries
3 unchanged sentences
Texas Disposal Corporation (a Texas corporation) and TBO Oil & Gas, LLC (a Texas limited liability company) (collectively, the “Company”)
−Removed: are engaged in the exploration, development and production of crude oil, natural gas, condensate and natural gas liquids (“NGLs”).
−Removed: Most of the Company’s oil and gas interests are centered in West Texas and Southeastern New Mexico;
−Removed: however, the Company owns producing
−Removed: properties and undeveloped acreage in fourteen states.
−Removed: All of Company’s oil and gas interests are operated by others.
+Added: are engaged in the exploration, development and production of natural gas, crude oil, condensate and natural gas liquids (“NGLs”).
+Added: Most of the Company’s oil and gas interests are centered in the West Texas and Southeastern New Mexico;
+Added: however, the Company owns
+Added: producing properties and undeveloped acreage in fourteen states.
+Added: All of the Company’s oil and gas interests are operated by others.
Basis of Presentation and Significant Accounting Policies
3 unchanged sentences
and Assumptions .
−Removed: In preparing financial statements in conformity with accounting principles generally accepted in the United States
−Removed: of America (“GAAP”), management is required to make informed judgments, estimates and assumptions that affect the reported
−Removed: amounts of assets and liabilities as of the date of the financial statements and affect the reported amounts of revenues and expenses
−Removed: during the reporting period.
−Removed: In addition, significant estimates are used in determining proved oil and gas reserves.
−Removed: Although management
−Removed: believes its estimates and assumptions are reasonable, actual results may differ materially from those estimates.
−Removed: The estimate of the
−Removed: Company’s oil and natural gas reserves, which is used to compute depreciation, depletion, amortization and impairment of oil and
−Removed: gas properties, is the most significant of the estimates and assumptions that affect these reported results.
+Added: In preparing consolidated
+Added: financial statements in conformity with accounting principles generally accepted in the United States of America (“GAAP”),
+Added: management is required to make informed judgments, estimates and assumptions that affect the reported amounts of assets and liabilities
+Added: as of the date of the financial statements and affect the reported amounts of revenues and expenses during the reporting period.
+Added: significant estimates are used in determining proved oil and gas reserves.
+Added: Although management believes its estimates and assumptions
+Added: are reasonable, actual results may differ materially from those estimates.
+Added: The estimate of the Company’s oil and natural gas reserves,
+Added: which is used to compute depreciation, depletion, amortization and impairment of oil and gas properties, is the most significant of the
+Added: estimates and assumptions that affect these reported results.
Financial Statements .
−Removed: In the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments
−Removed: (consisting only of normal recurring accruals) necessary to present fairly the financial position of the Company as of June 30, 2021,
−Removed: and the results of its operations and cash flows for the interim periods ended June 30, 2021 and 2020.
−Removed: The consolidated financial statements
−Removed: as of June 30, 2021 and for the three-month periods ended June 30, 2021 and 2020 are unaudited.
+Added: the opinion of management, the accompanying unaudited consolidated financial statements contain all adjustments (consisting only of normal
+Added: recurring accruals) necessary to present fairly the financial position of the Company as of September 30, 2021, and the results of its
+Added: operations and cash flows for the interim periods ended September 30, 2021 and 2020.
+Added: The consolidated financial statements as of September
+Added: 30, 2021 and for the three and six month periods ended September 30, 2021 and 2020 are unaudited.
The consolidated balance sheet as of
10 unchanged sentences
adequate to make the information presented not misleading.
−Removed: It is suggested that these consolidated financial statements be read in conjunction
−Removed: with the consolidated financial statements and notes thereto included in the Form 10-K.
+Added: It is suggested that these consolidated financial statements be read
+Added: in conjunction with the consolidated financial statements and notes thereto included in the Form 10-K.
Investments .
14 unchanged sentences
The Company only offsets derivative assets and liabilities
−Removed: for arrangements with the same counterparty when right of setoff exists.
+Added: for arrangements with the same counterparty when right of offset exists.
Derivative assets and liabilities with different counterparties
2 unchanged sentences
consolidated statements of cash flows.
−Removed: of June 30, 2021, the Company had no derivative contracts.
−Removed: During the quarter ended June 30, 2020, the Company entered into a series
−Removed: of crude oil put option contracts.
+Added: of September 30, 2021, the Company had no derivative contracts.
+Added: During the six months ended September 30, 2020, the Company entered into
+Added: a series of crude oil put option contracts.
All of these such contracts expired in July and August 2020.
11 unchanged sentences
in the accounts payable and other accrued expenses.
−Removed: following table provides a rollforward of the AROs for the first three months of fiscal 2022:
−Removed: of Rollforward of Asset Retirement Obligations
+Added: following table provides a rollforward of the AROs for the first six months of fiscal 2022:
+Added: Schedule of Rollforward of Asset Retirement Obligations
Carrying amount of asset retirement obligations as of April 1, 2021
2 unchanged sentences
Accretion expense
−Removed: Carrying amount of asset retirement obligations as of June 30, 2021
+Added: Carrying amount of asset retirement obligations as of September 30, 2021
Current portion
2 unchanged sentences
debt on the Consolidated Balance Sheets consisted of the following as of the dates indicated:
−Removed: of Long-Term Debt
−Removed: June 30, 2021
−Removed: March 31, 2021
+Added: Schedule of Long-Term Debt
+Added: September 30, 2021
Credit facility
Unamortized debt issuance costs (1)
−Removed: Total long-term debt
+Added: Total long-term debt, net
+Added: the current period, since the Company has no long term debt outstanding, unamortized debt issuance costs in the amount of $ 18,789
+Added: are included in Other noncurrent assets.
+Added: the current period, since the Company has no long term debt outstanding, unamortized debt issuance costs are included in Other
+Added: noncurrent assets.
December 28, 2018, the Company entered into a loan agreement (the “Agreement”) with West Texas National Bank (“WTNB”),
11 unchanged sentences
The unused commitment fee is payable quarterly in arrears on the last day of each calendar quarter.
−Removed: As of June 30,
−Removed: 2021, there was $ 700,000 available on the facility.
+Added: As of September
+Added: 30, 2021, there was $ 1,500,000 available for borrowing by the Company on the facility.
principal payments are anticipated to be required through the maturity date of the credit facility, March 28, 2023 .
15 unchanged sentences
Agreement does not permit the Company to enter into hedge agreements covering crude oil and natural gas prices without prior WTNB approval.
−Removed: balance outstanding on the credit facility as of June 30, 2021 was $ 800,000 .
−Removed: The following table is a summary of activity on the WTNB
−Removed: credit facility for the three months ended June 30, 2021:
−Removed: of Line of Credit Activity
+Added: was no balance outstanding on the line of credit as of September 30, 2021.
+Added: The following table is a summary of activity on the WTNB line
+Added: of credit for the six months ended September 30, 2021:
+Added: Summary of Line of Credit Activity
Balance at April 1, 2021:
−Removed: Balance at June 30, 2021:
−Removed: Subsequently,
−Removed: the Company has made payments totaling $ 250,000 , leaving a balance of $ 550,000 as of the date of this report.
−Removed: Stock-based Compensation
−Removed: Company recognized compensation expense of $ 13,865 and $ 14,005 related to vesting stock options in general and administrative expense
−Removed: in the Consolidated Statements of Operations for the first quarter of fiscal 2022 and 2021, respectively.
−Removed: The total cost related to non-vested
−Removed: awards not yet recognized at June 30, 2021 totals $ 100,266 , which is expected to be recognized over a weighted average of 2.10 years.
−Removed: following table is a summary of stock options activity for the three months ended June 30, 2021 and 2020:
−Removed: of Activity of Stock Options
−Removed: Number of Shares
−Removed: Weighted Average Exercise Price Per Share
−Removed: Weighted Aggregate Average Remaining Contract Life in Years
−Removed: Intrinsic Value
−Removed: Outstanding at April 1, 2021
−Removed: Forfeited or Expired
−Removed: Outstanding at June 30, 2021
−Removed: Vested at June 30, 2021
−Removed: Exercisable at June 30, 2021
−Removed: the three months ended June 30, 2021 and 2020, no
−Removed: stock options were granted.
−Removed: Subsequently,
−Removed: pursuant to approval from the Compensation Committee of the Board of Directors, the Company granted options covering 31,000
−Removed: shares of stock at a strike
−Removed: price of $ 8.51 effective July 26, 2021.
−Removed: the three months ended June 30, 2021, stock options covering 5,000 shares were exercised with a total intrinsic value of $ 15,036 .
−Removed: Company received proceeds of $ 34,000 from these exercises.
−Removed: During the three months ended June 30, 2020, no stock options were exercised.
−Removed: Subsequently, in July 2021, stock options covering 10,500 were exercised with a total intrinsic value of $ 36,433 .
−Removed: The Company received
−Removed: proceeds of $ 73,500 from these exercises.
−Removed: forfeiture rate is assumed for stock options granted to directors or employees due to the forfeiture rate history for these types of
−Removed: During the three months ended June 30, 2021 and 2020, there were no stock options forfeited or expired.
−Removed: options at June 30, 2021 expire between April 2023 and March 2030 and have exercise prices ranging from $ 3.34 to $ 7.00 .
+Added: ( 1,455,000 )
+Added: Balance at September 30, 2021:
Company leases approximately 4,160 rentable square feet of office space from an unaffiliated third party for our corporate office located
5 unchanged sentences
rate extending its current lease expiration date to July 2021 .
−Removed: In June 2021, the Company agreed to extend its current lease for 36 months .
+Added: In June 2021, the Company agreed to extend its current lease at a flat
+Added: (unescalated) rate for 36 months .
The amended lease now expires on July 31, 2024 .
14 unchanged sentences
balance sheets classification of lease assets and liabilities was as follows:
−Removed: of Operating Lease Assets and Liabilities
−Removed: June 30, 2021
+Added: Schedule of Operating Lease Assets and Liabilities
+Added: September 30, 2021
Operating lease right-of-use asset, beginning balance
5 unchanged sentences
Total lease liabilities
−Removed: minimum lease payments as of June 30, 2021 under non-cancellable operating leases are as follows:
−Removed: of Future Minimum Lease Payments
+Added: minimum lease payments as of September 30, 2021 under non-cancellable operating leases are as follows:
+Added: Schedule of Future Minimum Lease Payments
Lease Obligation
8 unchanged sentences
Operating lease liability, long term
−Removed: cash paid for our operating lease for the three months ended June 30, 2021 and 2020 was $ 10,929 and $ 10,600 , respectively.
+Added: cash paid for our operating lease for the six months ended September 30, 2021 and 2020 was $ 20,903 and $ 21,693 , respectively.
Rent expense,
less sublease income of $ 10,768 and $ 9,459 , respectively, is included in general and administrative expenses.
+Added: Stock-based Compensation
+Added: Company recognized stock-based compensation expense of $ 22,568 and $ 13,943 in general and administrative expense in the Consolidated
+Added: Statements of Operations for the three months ended September 30, 2021 and 2020, respectively.
+Added: Stock-based compensation expense recognized
+Added: for the six months ended September 30, 2021 and 2020 was $ 36,433 and $ 27,948 , respectively.
+Added: The total cost related to non-vested awards
+Added: not yet recognized at September 30, 2021 totals $ 265,248 which is expected to be recognized over a weighted average of 2.82 years.
+Added: the six months ended September 30, 2021, the Compensation Committee of the Board of Directors approved and the Company granted 31,000
+Added: stock options exercisable at $ 8.51
+Added: per share with an estimated fair value of
+Added: During the six months ended September 30, 2020, no
+Added: stock options were granted.
+Added: These options are
+Added: exercisable at a price not less than the fair market value of the stock at the date of grant, have an exercise period of ten
+Added: years and generally vest over four
+Added: in the following table is a summary of the grant-date fair value of stock options granted and the related assumptions used in the Binomial
+Added: models for stock options granted during the six months ended September 30, 2021 and 2020.
+Added: All such amounts represent the weighted average
+Added: Summary of Grant-date Fair Value of Stock Options Granted and Assumptions Used Binomial Models
+Added: Six Months Ended
+Added: Grant-date fair value
+Added: Volatility factor
+Added: Dividend yield
+Added: Risk-free interest rate
+Added: Expected term (in years)
+Added: following table is a summary of activity of stock options for the six months ended September 30, 2021:
+Added: Summary of Activity of Stock Options
+Added: Number of Shares
+Added: Weighted Average Exercise Price
+Added: Weighted Average Remaining Contract Life in Years
+Added: Intrinsic Value
+Added: Outstanding at April 1, 2021
+Added: Forfeited or Expired
+Added: Outstanding at September 30, 2021
+Added: Vested at September 30, 2021
+Added: Exercisable at September 30, 2021
+Added: the six months ended September 30, 2021, stock options covering 27,900 shares were exercised with a total intrinsic value of $ 104,473 .
+Added: The Company received proceeds of $ 185,732 from these exercises.
+Added: During the six months ended September 30, 2020, stock options covering
+Added: 1,500 shares were exercised with a total intrinsic value of $ 135 .
+Added: The Company received proceeds of $ 9,435 from these exercises.
+Added: were no stock options forfeited or expired during the six months ended September 30, 2021 and 2020.
+Added: No forfeiture rate is assumed for
+Added: stock options granted to directors or employees due to the forfeiture rate history of these types of awards.
+Added: options at September 30, 2021 expire between April 2023 and July 2031 and have exercise prices ranging from $ 3.34 to $ 8.51 .
valuation allowance for deferred tax assets, including net operating losses, is recognized when it is more likely than not that some
7 unchanged sentences
on the material write-downs of the carrying value of our oil and natural gas properties during fiscal 2016, we are in a net deferred
−Removed: tax asset position as of June 30, 2021.
−Removed: Our deferred tax asset is $ 1,180,248
−Removed: as of June 30, 2021 with a
−Removed: valuation amount of $ 1,180,248 .
+Added: tax asset position as of September 30, 2021.
+Added: Our deferred tax asset is $ 1,045,531 as of September 30, 2021 with a valuation amount of
+Added: $ 1,045,531 .
We believe it is more likely than not that these deferred tax assets will not be realized.
−Removed: assesses the available positive and negative evidence to estimate whether sufficient future taxable income will be generated to permit
−Removed: the use of deferred tax assets.
−Removed: The amount of the deferred tax asset considered realizable, however, could be adjusted if estimates of
−Removed: future taxable income are increased or if objective negative evidence in the form of cumulative losses is no longer present and additional
−Removed: weight is given to subjective evidence such as expected future growth.
+Added: Management assesses the available
+Added: positive and negative evidence to estimate whether sufficient future taxable income will be generated to permit the use of deferred tax
+Added: The amount of the deferred tax asset considered realizable, however, could be adjusted if estimates of future taxable income
+Added: are reduced or increased or if objective negative evidence in the form of cumulative losses is no longer present and additional weight
+Added: is given to subjective evidence such as expected future growth.
Related Party Transactions
−Removed: party transactions for the Company primarily relate to shared office expenditures in addition to administrative and operating expenses
−Removed: paid on behalf of the principal stockholder.
−Removed: The total billed to and reimbursed by the stockholder for the quarters ended June 30, 2021
+Added: party transactions for the Company relate to shared office expenditures in addition to administrative and operating expenses paid on
+Added: behalf of the principal stockholder.
+Added: The total billed to and reimbursed by the stockholder for the quarters ended September 30, 2021
and 2020 was $ 10,288 and $ 8,219 , respectively.
−Removed: The principal stockholder pays for his share of the lease amount for the shared office
−Removed: space directly to the lessor.
−Removed: Amounts paid by the principal stockholder directly to the lessor less sublease income for the three months
−Removed: ending June 30, 2021 and 2020 were $ 3,700 and $ 3,803 , respectively.
+Added: The total billed to and reimbursed by the stockholder for the six months ended September
+Added: 30, 2021 and 2020 was $ 23,056 and $ 18,321 , respectively.
+Added: The principal stockholder pays for his share of the lease amount for the shared
+Added: office space directly to the lessor.
+Added: Amounts paid by the principal stockholder directly to the lessor for the three months ending September
+Added: 30, 2021 and 2020 were $ 3,944 and $ 3,846 , respectively.
+Added: Amounts paid by the principal stockholder directly to the lessor for the six
+Added: months ending September 30, 2021 and 2020 were $ 7,988 and $ 7,649 , respectively.
Income (loss) Per Common Share
6 unchanged sentences
their inclusion would be anti-dilutive.
−Removed: following is a reconciliation of the number of shares used in the calculation of basic and diluted net income (loss) per share for the
−Removed: three-month periods ended June 30, 2021 and 2020.
−Removed: of Reconciliation of Basic and Diluted Net Income (loss) Per Share
+Added: following is a reconciliation of the number of shares used in the calculation of basic and diluted net loss per share for the three and
+Added: six month periods ended September 30, 2021 and 2020.
+Added: Schedule of Reconciliation of Basic and Diluted Net Income (loss) Per Share
+Added: Three Months Ended
+Added: Six Months Ended
+Added: September 30,
+Added: September 30,
Net income (loss)
1 unchanged sentence
Shares outstanding:
−Removed: Weighted average common shares outstanding – basic
−Removed: Effect of the assumed exercise of dilutive stock options
−Removed: Weighted average common shares outstanding – dilutive
+Added: Weighted avg.
+Added: shares outstanding – basic
+Added: Effect of assumed exercise of dilutive stock options
+Added: Weighted avg.
+Added: shares outstanding – dilutive
Income (loss) per common share:
−Removed: the three months ended June 30, 2021, no anti-dilutive shares relating to stock options were excluded from the computation of diluted
−Removed: Due to a net loss for the three months ended June 30, 2020, the weighted average number of common shares outstanding excludes
−Removed: common stock equivalents because their inclusion would be anti-dilutive.
+Added: the three and six months ended September 30, 2021, 31,000 shares relating to stock options were excluded from the computation of diluted
+Added: net income because their inclusion would be anti-dilutive.
+Added: Due to a net loss for the for the three and six months ended September 30,
+Added: 2020, the weighted average number of common shares outstanding excludes common stock equivalents because their inclusion would be anti-dilutive.
Subsequent Events
−Removed: July 2021, the Company made payments totaling $ 250,000 on the credit facility leaving a balance of $ 550,000 .
−Removed: July 2021, stock options covering 10,500 shares were exercised with a total intrinsic value of $ 36,433 .
+Added: October 4, 2021, stock options covering 16,100 shares were exercised with a total intrinsic value of $ 128,615 .
The Company received proceeds
of $ 103,928 from these exercises.
−Removed: to approval from the Compensation Committee of the Board of Directors, the Company granted options covering 31,000 shares of stock at
−Removed: a strike price of $ 8.51 effective July 26, 2021.
+Added: October 5, 2021, stock options covering 1,000 shares were exercised with a total intrinsic value of $ 8,138 .
+Added: The Company received proceeds
+Added: of $ 5,980 from these exercises.
+Added: October 22, 2021, the Company expended $ 84,600 for the completion of four wells in Lea County, NM.
+Added: October 27, 2021, the Company expended $ 126,000 for the drilling of four wells in Lea County, NM.
+Added: November 1, 2021, the Company had cash on hand of approximately $ 335,000 .
Company completed a review and analysis of all events that occurred after the consolidated balance sheet date to determine if any such
1 unchanged sentence
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.