How to get the all the implemented Custom Workflows and the Module it comes under

Hi all,

Please let me know how to get all the list of Custom Workflows implemented in the System, and under Which SAP Module ( MM /SD / HR / FI CO ..)

it comes under.  I found following relevant T-codes and Tables,

T-codes  :   1) SWDM,   2) PFTC   ,  3) SWETYPV   , 4) SWDD   , 5) SWDS , 6) PFTC_DIS

Tables :      1) HRSOBJECT  ,  2) SWFDEVTYP

I don't have much idea on workflow.  Please suggest...

Thanks