3 Lines of SAS is too much.
Check this out:
\nDO T=1 TO 99;\n IF T =1 THEN COMMX=COMM1; ELSE COMMX=COMM2;\n EXPS(T)=(1-((LOSS(T)* &LRHO * &LRAGE * &LRVEH * LROCT * PLK_LRF)\n + (&GOE+&PTE+&COC+COMMX) - &IIR));\n EXPY(T)=(1-((LOSS(T)* &LRHO * &LRAGE * &LRVEH * LROCT * PLK_LRF)\n + (&GOE+&PTE+COMMX) - &IIR));\n R= T-1;\n
Imagine hundreds of lines of this stuff.