Updated Texassemble (markdown)

Texassemble.md

@@ -13,7 +13,7 @@ texassemble <command> [options] [--file-list <filename>] <file-name(s)>
 
 The file-name parameter indicates the file(s) to use to create the assembled image using ``dds``, ``tga``, ``hdr``, or a WIC-supported format (``bmp``, ``jpg``, ``png``, ``jxr``, etc.).
 
-> The command-line parsing uses Windows-style `-` or `/` for options. It also has some POSIX-like behavior: it supports ``--version`` and ``--help`` command-line options, and the use of ``--`` disables further options parsing to support filenames that begin with `-` or `/` characters.
+> The command-line parsing uses Windows-style `-` or `/` for options. It also has some POSIX-like behavior: it supports ``--version`` and ``--help`` command-line options, and the use of ``--`` disables further options parsing to support filenames that begin with `-` or `/` characters. There are 'GNU long options' style command-line parameters that use ``--`` as well.
 
 
 # Commands