These tiny new lines of code solve I problem I was wrestling with for years!
It's now much easier to make vertical rules in tables...

**** File 1) TEXSEM.SAV[TEX,DEK]/17P/176L
1)						mem[pp]←mem[pp]-
**** File 2) TEXSEM.SAI[TEX,DEK]/17P/176L
2)						height(pp)←height(p); depth(pp)←depth(p);
2)						mem[pp]←mem[pp]-
***************


**** File 1) TEXSEM.SAV[TEX,DEK]/17P/182L
1)						mem[pp]←mem[pp]-
**** File 2) TEXSEM.SAI[TEX,DEK]/17P/183L
2)						width(pp)←width(p);
2)						mem[pp]←mem[pp]-
***************