The voter chooses the relevant slip for their party, puts it in the envelope, seals it, and then places the envelope into the ballot box. The system is simple to use for those with limited literacy. This is especially important in Israel where many new immigrants struggle with the language. Each party must register its chosen letters with the Israeli Central Elections Committee, and certain letters are reserved. If a new party wishes to use letters from an older party, it must receive permission from that party. Example of reserved letters are Mem, Het and Lamedh for Likud and Shin and Samekh for Shas.