Questão sem resposta!
S STRETCH / Stretches objects crossed by a selection window or polygon
SC SCALE / Enlarges or reduces selected objects, keeping the proportions of the object the same after scaling
SET SETVAR / Lists or changes the values of system variables
SEC SECTION / Uses the intersection of a plane and solids, surfaces, or mesh to create a region
DS DSETTINGS / Sets grid and snap, polar and object snap tracking, object snap modes, Dynamic Input, and Quick Properties
Fonte: https://www.autodesk.com/shortcuts/autocad