**SC_SIGN**-
If cell C is an i-level cell of an ESPCAD (Extended sub-CAD), then
field SC_SIGN is a list (s_1,s_2, ... ,s_m), such that there are
m i-level projection factors for the ESPCAD, and s_j is the sign of
the jth i-level projection factor in C.
**SC_EXTS**-
If cell C is an i-level cell of an ESPCAD (Extended sub-CAD), then
field SC_EXTS is a list (s_1,s_2, ... ,s_m), such that there are
m i-level projection factors for the ESPCAD, and s_j is the
**index**of the jth i-level projection factor in C. **SC_TMPM**- This is a temporary mark whose use is variable.
**SC_RRNV**- If cell C is an i-level cell of an ESPCAD (Extended sub-CAD), then field SC_RRNV is a list (s_1,s_2, ... ,s_m), such that there are m (i+1)-level projection factors, and s_j gives the number of distinct real roots of the jth (m+1)-level projection factor over C. If the jth polynomial is identically zero over C, then s_j is -1.

Here's a list of programs for manipulating ESPCAD's: LIST

Christopher W. Brown Last modified: Tue Jul 30 15:24:34 EDT 2002