chainComplex(GradedModule) -- make a chain complex from a graded module

Function: chainComplex
Usage:

chainComplex M
Inputs:
- M, a graded module
Outputs:
- a chain complex, the chain complex made from M by installing the zero map as differential

Ways to use this method:

The source of this document is in /__w/M2/M2/macaulay2-1.26.05+ds/M2/Macaulay2/packages/OldChainComplexes/docs/chainComplex-doc.m2:70:0.