In SWI It is highly recommended that you install from within by using its
package manager.
To install simply do:
?- pack_install(debug_calls).
And then load by:
?- [library(debug_calls)].
To check version:
?- debug_call_version( V, D ).
module documentation:
debug_call.html
sources: debug_call
Nicos Angelopoulos
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London
March, 2017