scheme-trace-command

scheme-trace-command is a variable defined in `cmuscheme.el'.
Its value is

"(trace %s)"

• This variable may be risky if used as a file-local variable.

Documentation:
Template for issuing commands to trace a Scheme procedure.
Some Scheme implementations might require more elaborate commands here.
For PLT-Scheme, e.g., one should use

(setq scheme-trace-command "(begin (require (lib \"trace.ss\")) (trace %s))")

For Scheme 48 and Scsh use ",trace %s".

You can customize this variable.