Part of the debate – in the House of Commons am ar 15 Mehefin 1933.
As a bill passes through Parliament, MPs and peers may suggest amendments - or changes - which they believe will improve the quality of the legislation.
Many hundreds of amendments are proposed by members to major bills as they pass through committee stage, report stage and third reading in both Houses of Parliament.
In the end only a handful of amendments will be incorporated into any bill.
The Speaker - or the chairman in the case of standing committees - has the power to select which amendments should be debated.
The clause by clause consideration of a parliamentary bill takes place at its committee stage.
In the Commons this usually takes place in a standing committee, outside the Chamber, but occasionally a bill will be considered in a committee of the Whole House in the main chamber.
This means the bill is discussed in detail on the floor of the House by all MPs.
Any bill can be committed to a Committee of the Whole House but the procedure is normally reserved for finance bills and other important, controversial legislation.
The Chairman of Ways and Means presides over these Committees and the mace is placed on a bracket underneath the Table.
