A text tile is surrounded by margin space (like any other kind of tile), which presents a problem when you want to combine pieces of text.
For example, assume you want to display the following message:
The time is now 0800 hours and 37 seconds.
The actual values (0800 and 37) are supplied by your program. You can do this by creating a concatenated line of text built out of text_part tiles. You can also use text parts vertically to create a paragraph that doesn't have too much space between the lines.
The following text cluster tiles are prototypes defined in the base.dcl file.