You can use TeX Macros in DrScheme 18.104.22.168 and newer!
Here is how you do it in either the editor or the REPL:
- Enter a backslash
- Enter the macro name
- Enter M:\
This is yet another delightful thing that the PLT folks have added to an already great IDE!
Here are some TeX macros (source)
Here is an example of how it works: