You can check the Armistice Agreement lodged with the UN here:
http://unispal.un.org/UNISPAL.NSF/0/9EC4A332E2FF9A128525643D007702E6
Convention générale d'armistice entre Israël et l'Egypte
Here are the relevant articles ,1V and V

Article IV

With specific reference to the implementation of the resolutions of the Security Council of 4 and 16 November 1948, the following principles and purposes are affirmed:

1. The principle that no military or political advantage should be gained under the truce ordered by the Security Council is recognized.

2. It is also recognized that the basic purposes and spirit of the Armistice would not be served by the restoration of previously held military positions, changes from those now held other than as specifically provided for in this Agreement, or by the advance of the military forces of either side beyond positions held at the time this Armistice Agreement is signed.

3. It is further recognized that rights, claims or interests of a non-military character in the area of Palestine covered by this Agreement may be asserted by either Party, and that these, by mutual agreement being excluded from the Armistice negotiations, shall be, at the discretion of the Parties, the subject of later settlement. It is emphasized that it is not the purpose of this Agreement to establish, to recognize, to strengthen, or to weaken or nullify, in any way, any territorial, custodial or other rights, claims or interests which may be asserted by either Party in the area of Palestine or any part or locality thereof covered by this Agreement, whether such asserted rights, claims or interests derive from Security Council resolutions, including the resolution of 4 November 1948 and the Memorandum of 13 November 1948 for its implementation, or from any other source. The provisions of this Agreement are dictated exclusively by military considerations and are valid only for the period of the Armistice.

Article V

1. The line described in Article VI of this Agreement shall be designated as the Armistice Demarcation Line and is delineated in pursuance of the purpose and intent of the resolutions of the Security Council of 4 and 16 November 1948.

2. The Armistice Demarcation Line is not to be construed in any sense as a political or territorial boundary, and is delineated without prejudice to rights, claims and positions of either Party to the Armistice as regards ultimate settlement of the Palestine question.

3. The basic purpose of the Armistice Demarcation Line is to delineate the line beyond which the armed forces of the respective Parties shall not move except as provided in Article III of this Agreement.

4. Rules and regulations of the armed forces of the Parties, which prohibit civilians from crossing the fighting lines or entering the area between the lines, shall remain in effect after the signing of this Agreement with application to the Armistice Demarcation Line defined in Article VI.