RMFNTSIZE changes the size of Ramtek text displayed on the Ramtek display. Not supported in REF package.
CALL RMFNTSIZE (ic,ih,iv,ihs,ivs,ie) ic (I): channel number (from RAMOPEN or IRMCHAN) ih,iv (I): horizontal,vertical dimension ihs,ivs (I): horizontal,vertical spacing ie (I): (returned) error code