itsp/MaxFrames is a SAP Parameter attribute which is used to control SAP Gui for HTML, maximum number of frames 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 .
Maximum number of subscreens for one individual screen. The number per
screen is calculated as follows: (number of subscreens) + (number of
tabs) + 1
See SAP Parameter Documentation for full SAP documentation for this profile parameter.