replace all 'u' by 't',					            :u=t
remove all '"',						                :"=
copy (full_name) to this field,				        :*=*(full_name)
append (full_name) to this field,			        :*=*1 *(full_name)
calculate sequence checksum,				        seqcheck#|sequence|"ARB_";checksum(exclude=.-n;toupper)
count ambigus letters,					            tmp#|sequence|mid(40,-100)|len("-ACGTU")
count ambiguities (nry. ...) (filter: ECOLI),		tmp#|sequence|filter(SAI=ECOLI,exclude=.-)|mid(10,-10)|len("-ACGTU")
truncate seq. ranges outside ecoli range,			|filter(SAI=ECOLI,exclude=.)
increase G+C content in helical regions by 5%,		ali_*/data#|change(SAI=HELIX,exclude=.-,change=5,to=GC)