These control the searching for and creation of oligo primers. Together they
form the Select Primer functionality of the contig editor. The
generate command must be run first. All other commands have undefined
behaviour when the generate command has not been run since the last quit
select_oligos generatesense forward backward avg_length
generatecommand (or the first if this hasn't been called yet). This remembers the current active oligo number and returns the default template followed by the complete list of templates (including the default) suitable for this oligo.