B.1 Introduction

Each TCM document is stored in a separate Unix file as plain text in an (almost) readable format. This chapter contains a specification of the TCM file format of documents generated by the TCM version of this manual, which generates  the TCM file format version 1.2. The TCM editors read also older file formats, down to file format version 1.0, but they only generate the latest file format of that TCM tool. Older file format versions are not described here. Each file can be converted to the recent format by reading it in from a recent tool and then saving it back to file.