S (Search) - Search for data string

Format: S [segment:][address],[byte[,byte],...]

     The system searches for a byte string starting from the specified
address. By default, it chooses the previous search address and the
previous search string. Suppose you want to find 48A6 in data area starting
from address 2000:

        S DS:2000,A6,48

The answer will look something like:
        20D5:0131

     That is, the needed string has been found at that address (DS=20D5).