Renderstamp variables

These symbols, when put into the render stamp text in Render Setup > System > Frame Buffer > Render stamp, get replaced with corresponding statistics/render information:

 Symbol   Meaning  
%prPerformance: Rays per second
%ppPerformance: Passes
Performance: Noise level
%ptPerformance: Total elapsed time
Performance: Parsing time (in milliseconds)
%psPerformance: Rays per sample
%slScene: Number of light primitives
%soScene: Number of objects
%spScene: Number of portals
%siScene: Number of instanced primitives
%suScene: Number of unique primitives
%cCPU name
%iThis computer name
%fCurrently rendered filename
%nActual frame number
%dCurrent date/time
%bCorona build datestamp
Corona build name
%vCurrent camera name
Output filename, if specified
Memory currently used by Corona
Peak memory used by Corona
Virtual memory currently used by 3ds Max + Corona
Peak virtual memory used by 3ds Max + Corona
Virtual memory currently used by the system

Note: the variables work exactly the same for the renderstamp and for the autosave filenames.