prompt each window directly with a cookie?

[asdf_OoO]

hi. is it possible, if u are in the left window (or right), to use the other window as a cookie ?
for example, u are in the left window and marked one dir (%f).
now i want to send the dirname to the other window like 'MKD %f'.
is there a cookie or some other way, to prompt each windows directly with a cookie ?

thx in advance for ur help,

asdf