IAmNeil

ABAP (Advanced Business Application Programming, German for "general report creation processor"), pronounced as 'ah-bop', is a high-level programming language created by the German software company SAP.
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You may wonder why I post this - it's ABAP('ah-bop') a language created by SAP.
Yes, it doesn't make sense and it's insane, just as the following formula(a1,b2,a2,p1). But it might be useful in the examples on Schweser Notes 5, Page 153. Who knows? -

Rp-Rb = Ra1*(1+Rb2) + Ra2*(1+Rp1)