9. A non-transitory computer-readable medium storing instructions, the instructions comprising: one or more instructions that, when executed by one or more processors of a computing device, cause the one or more processors to: select an identifier included in program code, the identifier being a portion of the program code, the program code being embedded in a graphical model, the program code including a C-function; determine an association between the identifier and an entity that the identifier references, the association being a binding between the identifier and the entity, the association being valid for a particular lexicographical scope, the particular lexicographical scope being portions of the program code for which the association is valid and portions of the graphical model for which the association is valid, the entity being referenceable at a program code location of the identifier, where the one or more processors, when determining the association between the identifier and the entity, are further to: determine one or more entities of the C-function that are referenceable at the program code location of the identifier, determine a lexical scope within the C-function for the one or more entities of the C-function, and select, as the entity, one of the one or more entities of the C-function that are referenceable at the program code location of the identifier based on the lexical scope of the one or more entities of the C-function; and utilize the entity that the identifier references based on determining the association between the identifier and the entity.
15. The non-transitory computer-readable medium of claim 9 , where the one or more instructions, that cause the one or more processors to utilize the entity, further cause the one or more processors to: execute the C-function that includes the identifier.