In order to have intelligence in the formats (.fmt file), you have to build the format with tables. Any variable within a table can be either prompted or better yet, read information from the part/assembly files.
You can build some fairly complex tables that look like titleblocks in drawings. You can erase table lines, assign line weights (or colors), and you size and place them exactly. The hardest trick is to make a title optionally 1 or 2 line, but that is definitely next level stuff.
Any text you enter in a table prefixed with "&" becomes a variable as long as it follows the rules for variables.
On top of the tables, you can "sketch" lines and add text, and even logos (symbols recommended).
The next level you can add your well defined format to a drawing. These drawings can be made into "template" files even though they are still drawing files. You can preset a lot of information, including predefined views and view states. 1st master the format, and we can come back to the template.
No one goes into creating formats lightly. It is a serious effort and you will pull some hair out in the process. Having a plan and a layout will go a long way to making a format work for you.
Last note; when a format prompts you for information, the variable character for that field is lost. Typically (not always) the data for the format is included in the part or assembly files using relations (or just parameters). To restore the variables, you can re-insert the format in the drawing.
Let me know if you want an example format for reference.
