exe/disp+work is a SAP Parameter attribute which is used to control Name of dispatcher executable information. This is available within R/3 SAP systems depending on the version and release level.
Below is the standard documentation available and a few details of the attributes values .
This parameter determines the name and path of the SAP Dispatcher, which
generates the work processes (disp+work).
See SAP Parameter Documentation for full SAP documentation for this profile parameter.