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+.\" Copyright (c) 1983, 1990, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Asa Romberger and Jerry Berkman.
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	This product includes software developed by the University of
+.\"	California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)fsplit.1	8.1 (Berkeley) 6/6/93
+.\"
+.Dd June 6, 1993
+.Dt FSPLIT 1
+.Os BSD 4.2
+.Sh NAME
+.Nm fsplit
+.Nd split a multi-routine Fortran file into individual files
+.Sh SYNOPSIS
+.Nm fsplit
+.Op Fl e Ar efile
+\&...
+.Op Ar file
+.Sh DESCRIPTION
+.Nm Fsplit
+takes as input either a file or standard input containing Fortran source code.
+It attempts to split the input into separate routine files of the
+form
+.Ar name.f ,
+where
+.Ar name
+is the name of the program unit (e.g. function, subroutine, block data or
+program).  The name for unnamed block data subprograms has the form
+.Ar blkdtaNNN.f
+where NNN is three digits and a file of this name does not already exist.
+For unnamed main programs the name has the form
+.Ar mainNNN.f .
+If there is an error in classifying a program unit, or if
+.Ar name.f
+already exists,
+the program unit will be put in a file of the form
+.Ar zzzNNN.f
+where
+.Ar zzzNNN.f
+does not already exist.
+.Pp
+.Bl -tag -width Fl
+.It Fl e Ar efile 
+Normally each subprogram unit is split into a separate file.  When the
+.Fl e
+option is used, only the specified subprogram units are split into separate
+files.  E.g.:
+.Pp
+.Dl fsplit -e readit -e doit prog.f
+.Pp
+will split readit and doit into separate files.
+.El
+.Sh DIAGNOSTICS
+If names specified via the
+.Fl e
+option are not found, a diagnostic is written to
+standard error.
+.Sh HISTORY
+The
+.Nm fsplit
+command
+appeared in
+.Bx 4.2 .
+.Sh AUTHORS
+Asa Romberger and Jerry Berkman
+.Sh BUGS
+.Nm Fsplit
+assumes the subprogram name is on the first noncomment line of the subprogram
+unit.  Nonstandard source formats may confuse
+.Nm fsplit .
+.Pp
+It is hard to use
+.Fl e
+for unnamed main programs and block data subprograms since you must
+predict the created file name.