"Check whether BEAM has POSL and POSR quants. POSL are (POSITION
. QUANT) pairs, where QUANT is -1 (hang), 0 (center), 1 (sit) or -2/ 2 (inter)
"Check whether BEAM has POSL and POSR quants. POSL are (POSITION
. QUANT) pairs, where QUANT is -1 (hang), 0 (center), 1 (sit) or -2/ 2 (inter)