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+BIN.FREEBSD
+
+This directory contains host-specific binaries for the FreeBSD version
+of IRAF. These are generated automatically in an HSI bootstrap, which is
+performed by the "reboot" command in $iraf/unix.
+
+An exception to the above are the F2C files in this directory. The F2C
+executable, library, and include file, which are manually copied in from
+the host system. These are installed here as IRAF requires them but they
+are not typically installed on Linux systems these days. IRAF XC uses
+the f77.sh script in HLIB to compiler Fortran files. This script is
+tailored to use the version of F2C installed here in HBIN.