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Set scan limits Resume Start at upper scan limit. Scan spread field for break characters. scan * or / + or - end of scan Set EF marker Set precedence marker. Is precedence marker set? yes no $ TERM Compile term. Compiled program stores result in tempo- rary. Modify spread field. Is EF marker Save left end of term index. no set? yes Resume scan end of scan Start at upper scan limit. get next word from spread field, and replace it with a zero. What is it? symbol + or - Set EF marker $PIVAR Insert in variable field of card. Save right break character. Is this first time through? ves no Look at left break Look at left break + or start of scan FSB CLA CLS ---FAD $GENP Is EF marker on? no yes Examine calling sequence. Should result be stored? no yes $GNST Generate temporary storage symbol. Insert symbol in spread field. Place in $PIVAR variable field. $GENP Generate ST instruction. Return to caller