Abstract: Disclosed is a method for generating a menu model of a character user interface. The method may include: recognizing one or more reference variables into which one or more objects are input among one or more variables related to a first screen; generating call relationship information of each of the one or more reference variables; recognizing a common reference variable which is commonly referenced among the one or more reference variables by using the call relationship information; and generating a menu model by using at least one menu selection variable included in the common reference variable.

Abstract: Disclosed is a computer readable storage containing a computer program including commands which cause a computer to execute steps and the steps may include: receiving a first data set from a mainframe; converting the first data set into first data of a JSON (JavaScript Object Notation) type for generating a web page; generating a web page based on the first data; and transmitting the web page to the web browser so that the web page is output through the web browser, and the webpage may allow user interaction.