# Metadata (custom, block starting with %something)
# Metadata is ignored but can be interpreted externally
# Metadata (custom, block starting with %something)
# Metadata is ignored but can be interpreted externally
len = RLENGTH; st = RSTART;
return _block( substr( block, len + 1) );
len = RLENGTH; st = RSTART;
return _block( substr( block, len + 1) );