in scripts &VBDPR-FKIMG(I12.0R)& what is I12.0r ?

Dear All,

in scripst i came across field &VBDPR-FKIMG(I12.0R)& and &VBDPR-ZZDSC_TEXT(I16R)& in these what does I12.0r and I16r represent? please let me know.

Thanks,

Naresh