FWEB reads files with a variety of default extensions.
.fweb — Initialization file (optional; for setting up default options used for all runs). This file is always in the user’s home directory. See Initialization.
fweb.sty — Style file (optional; for customizing the behavior of a particular
webfile or group of files). See The Style file. This file is always in the directory of thewebfile that is being tangled unless that is changed by environment variableFWEB_STYLE_DIR. The basic name can be changed by the ‘-z’ option (see ‘-z’: Change name of style file). A sample fweb.sty file is provided with the FWEB distribution.name.web — Source file.
name.ch — Change file (optional; for making incremental changes to a
websource file). See Change files.name.hweb — Code included into web file with ‘@i’ (see ‘@i’: Include file (unconditional)). Include files are searched for in the path set by the environment variable
FWEB_INCLUDESand/or the ‘-I’ option (see ‘-I’: Append to search list for include files). If that path is empty, then the current directory is searched.name.hch — Optional change file for include file.