(a) The program fund is an account in the general revenue fund to be administered by the comptroller.
(b) The fund is composed of:
(1) general revenue transferred to the fund;
(2) money appropriated to the fund;
(3) interest and other earnings attributable to the investment of money in the fund;
(4) gifts, grants, and donations received under Section 29.370; and
(5) any other money available for purposes of the program.
(c) Money in the fund may be used only for the purposes specified by this subchapter.