README for Tcl configured as part of the IRAF Object Manager Library. This is the standard Tcl distribution; the only difference is the addition of an Imakefile to allow automated building of the Tcl library as part of the Object Manager. The Imakefile should be machine independent with one exception, the COMPAT_OBJS definition, which lists the compatibility routines. The list of objects defined here may have to be modified for a different host. One way to do this is to manually run "./configure" in this directory to build the standard Tcl Makefile, then transfer the COMPAT_OBJS entry therein to the Imakefile. Tcl does not need to be installed (as in make install) to be used with the Object Manager. The contents of the Tcl library are automatically included in libObm.a when the library is built. The Tcl include file can be referenced as Tcl/tcl.h, with the OBM root directory specified as an -I include directory in the application's Imakefile. In most cases the application using OBM need not know that Tcl is used internally.