All unknown labels renamed

safe.inc

@@ -46,11 +46,15 @@ ORI_SCR_FA  EQU 0xF32A
 
 CLRCLRT     EQU 0xF341
 
-; Variable
-SAF_CURATR  EQU 0xF349
+; Cursor attribute mirror in safe RAM (set by CUR_ATTR_SPLIT,
+; used by OR_SAFE_SET_ATTR to OR attribute bits into pixel bytes)
+CURATR_SAFE  EQU 0xF349
 
-; Variable
-BYTE_ram_f34a  EQU 0xF34A
+; Hi pixel color attribute bit (bit 5 of CURCATR), stored as 0/0xFF.
+; Set by CUR_ATTR_SPLIT; OR'ed into pixel bytes when plotting in
+; 4-color mode (PSET4C / ORI_SAFE_SET_ATTR); tested by CLS.
+; Sibling of CURATR_SAFE (bit 4) - together they form the 2-bit pixel color.
+PSET_ATTR_A1 EQU 0xF34A
 
 ; --------------------------------------------------
 ; Output char for specified memory page