Dear sir , as in the photo can u explain more about it must be signed by the maker or the drawer which from Negotiable Instruments Act Law book.

IV. It must be signed by the maker or the drawer; that is, till the drawer affixes such goto his signature, it will be taken as invalid and will have no effect. The effect of signature is to authenticate the document. If the maker is unable to write his name, he may sign by X' mark. A signature in pencil is also valid