Maryland Code, Estates and Trusts § 4-603

(1) Shall be made in writing;

(2) Does not need to be written by the testator;

(3) May be written in any language; and

(4) May be written by hand or by any other means.

(b)(1) The testator shall declare in the presence of at least two witnesses and a person authorized to act in connection with international wills that the document is the testator's will and that the testator knows the contents of the document.

(2) The testator need not inform the witnesses or the authorized person of the contents of the will.

(1) Sign the will; or

(2) If the testator has previously signed the will, acknowledge the testator's signature.

(d)(1) If a testator is unable to sign, the absence of the testator's signature does not affect the validity of the will if:

(2) If a testator is unable to sign, another person present, including the authorized person or one of the witnesses, may sign the testator's name for the testator if:

(3) Notwithstanding paragraph (2) of this subsection, a person is not required to sign the testator's name at the testator's direction.