add MatSetFromOptions

rename GetNmat to GetNumberMat

set type outside of if

improve documentation

rename GetNMat to GetNmat

add MatMultAdd

get composite type

allow merging from left

make create last function

use PetscUseMethod()

fix muptiplicative merge

allow multiplicive composite with rectangular mats

get ith matrix

add counter for number of matrices

Man pages: add newlines after "Notes:"

This allows for proper formatting from sowing.

On OS X (using gsed, not the default BSD sed), from the PETSc root directory:

find src include -type f \(

Man pages: add newlines after "Notes:"

This allows for proper formatting from sowing.

On OS X (using gsed, not the default BSD sed), from the PETSc root directory:

find src include -type f \( -name "*.c" -or -name "*.h" -or -name "*.cxx" \) | xargs gsed -i 's/Notes\s*:\s*\(\w.*\)/Notes:\n \1/'

This adds a newline and 4 spaces whenever "Notes:" is followed by any "word" character, in any .c, .h, or .cxx file in src/ or include/

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