For tasks with a few parameters, using position is quick and convenient. However, in complex applications with many parameters it would be tedious not only to enter all the intermediate values between the ones you want to define, but also to remember them all. Another consideration is that some parameters do not have defined positions because they are normally defaulted. Keywords may also be abbreviated. Thus the keyword technique is recommended for most parameters, especially in scripts and procedures. Unabbreviated keywords insulate scripts against new keywords and positional changes that are sometimes needed.
See custom KAPPA commands if you want to learn how further to abbreviate command strings to reduce typing for manual operation.
KAPPA --- Kernel Application Package