--- /dev/null
+.\" -*- NROFF -*-
+.TH pjHinterp 1
+
+.SH NAME
+pjHinterp - interpolate helical data in projection space.
+
+.SH SYNOPSIS
+.B pjHinterp projfile interpfile [OPTIONS]
+.SH DESCRIPTION
+\fIphm2pj\fP interpolates the helical data in in projfile
+and writes the results in interpfile.
+
+.SH OPTIONS
+.TP 16
+.B \-\-field-of-view
+Field of view (ratio to diameter of phantom square) (default = 1)
+.TP 16
+.B \-\-trace
+Trace level to use, one of:
+.RS
+.TP
+.B none
+No tracing (default)
+.TP 16
+.B console
+Trace text level
+.RE
+.TP 16
+.B \-\-verbose
+Verbose mode
+.TP 16
+.B \-\-debug
+Debug mode
+.TP 16
+.B \-\-version
+Print version
+.TP 16
+.B \-\-help
+Print a terse help message
+
+.SH AUTHORS
+Ian Kay, Ph.D.
+Kevin Rosenberg, M.D. <kevin@ctsim.org>
+
+.SH HISTORY
+CTSim was begun in 1983 using MS-DOS and an EGA display adapter. In
+1999 it was ported to GNU/Linux and later ported to Microsoft Windows.
+
+.SH SEE ALSO
+.BR ctsim (1), ifinfo (1), if1 (1), if2 (1), ifexport (1), phm2if (1), pj2if (1), pjrec (1), pjinfo (1)