Keeping a chumash or megilah in the Aron Kodesh

Hi,

The Mishneh Berurah (154:31) writes that one may not place items in the Aron Kodesh (Ark); this includes siddurim and chumashim. However, perhaps one may keep a parchment megilah in the Aron Kodesh, because the rules for writing a megilah resemble those of a Torah scroll. Also, where the custom is to do this, one might contend that this was built into the terms with which they dedicated the Aron Kodesh initially.

(Rivivot Ephraim 1:118:2)

[It is also worth noting that some may be lenient with an Aron Kodesh that is built into the wall of the synagogue, as opposed to a standalone Aron Kodesh. See Rama Orach Chaim 154:3 and Shaar haTziyun 154:22.]

המצפה לישועה,
Mordechai