Difference Between MsgGet, MessageBox, & MsgGetText PeopleCode Functions

Wondering why there are 3 different functions or ways to get text
from a message catalog? Check the comparison below and decide which one
best fits your needs.

MsgGet(message_set, message_num, default_msg_txt [, paramlist])
The MsgGet function
retrieves a message from the PeopleCode Message Catalog and substitutes
in the values of the parameters into the text message.

Example: &MsgText = MsgGet(30000, 2, "Message not found");