type t = TEX_LITERAL of Render_info.t | TEX_CURLY of t list | TEX_FQ of t * t * t | TEX_DQ of t * t | TEX_UQ of t * t | TEX_FQN of t * t | TEX_DQN of t | TEX_UQN of t | TEX_LR of Render_info.t * Render_info.t * t list | TEX_BOX of string * string | TEX_BIG of string * Render_info.t | TEX_FUN1 of string * t | TEX_FUN2 of string * t * t | TEX_FUN2nb of string * t * t | TEX_INFIX of string * t list * t list | TEX_FUN2sq of string * t * t | TEX_FUN1hl of string * (string * string) * t | TEX_FUN1hf of string * Render_info.font_force * t | TEX_FUN2h of string * (t -> t -> string * string * string) * t * t | TEX_INFIXh of string * (t list -> t list -> string * string * string) * t list * t list | TEX_MATRIX of string * t list list list | TEX_DECLh of string * Render_info.font_force * t list