(xemacs.info)ForIndent Vars

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21.13.2.4 Variables for Fortran Indentation
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Several additional variables control how Fortran indentation works.

`fortran-do-indent'
     Extra indentation within each level of `do' statement (the default
     is 3).

`fortran-if-indent'
     Extra indentation within each level of `if' statement (the default
     is 3).

`fortran-continuation-indent'
     Extra indentation for bodies of continuation lines (the default is
     5).

`fortran-check-all-num-for-matching-do'
     If this is `nil', indentation assumes that each `do' statement
     ends on a `continue' statement.  Therefore, when computing
     indentation for a statement other than `continue', it can save
     time by not checking for a `do' statement ending there.  If this
     is non-`nil', indenting any numbered statement must check for a
     `do' that ends there.  The default is `nil'.

`fortran-minimum-statement-indent'
     Minimum indentation for Fortran statements.  For standard Fortran,
     this is 6.  Statement bodies are always indented at least this
     much.