To install on OpenVMS:

Define Logicals HTMLDOC_DATA and TMPDIR using Unix syntax:

e.g

$ define HTMLDOC_DATA  = "USERDISK$/SMITH/HTMLDOC-1_8_23/"

$ define TMPDIR = "USERDISK$/SMITH/HTMLDOC-1_8_23/HTMLDOC/" (LNM$PROCESS_TABLE)