# SECTION 3, Bit-map section
position offsetSection3;
section_length[3] section3Length ;
meta section3Pointer section_pointer(offsetSection3,section3Length,3);

# Number of unused bits at end of Section 3
unsigned[1] numberOfUnusedBitsAtEndOfSection3 = 0: read_only;
alias unusedBitsInBitmap=numberOfUnusedBitsAtEndOfSection3;

# Table reference:
unsigned[2] tableReference = 0 : dump;

position offsetBeforeBitmap;
meta geography.bitmap g1bitmap( tableReference,
                    missingValue,
                    offsetSection3,
                    section3Length,
                    numberOfUnusedBitsAtEndOfSection3) : read_only,dump;

position offsetAfterBitmap;

padtoeven padding_sec3_1(offsetSection3,section3Length);
section_padding section3Padding;

meta md5Section3 md5(offsetSection3,section3Length);