control flow
order in which individual statements, instructions or function calls of an imperative program are executed or evaluated
subroutine
sequence of instructions that can be called from other points in a computer program
control loop
fundamental building block of industrial control systems, consisting of all the physical components and control functions necessary to automatically adjust the value of a measured process variable with respect to that of a desired set-point
exception handling
process of responding to anomalous or exceptional conditions requiring special processing in computer programming
statement
smallest standalone element of an imperative programming language that expresses some action to be carried out