COMPUTER SYSTEM

摘要

A computer system including a host application for editing a document and a conversion application, in which the conversion application comprises a class which operates externally of said the application. The class is operable to convert a numerical value of a first measurement unit to a corresponding numerical value of a second measurement unit by reference to a stored conversion relationship between the first and second measurement units. An interface means is provided for interacting with the host application to: i) find all occurrences in the document of any numerical value of the first measurement unit; ii) present each such value to the class for conversion to the corresponding numerical value of the second measurement unit; iii) receive the corresponding numerical value of the second measurement unit from the class; and iv) insert into the document the corresponding numerical value of the second measurement unit by replacing the original value and its measurement unit with the corresponding numerical value, or appending the corresponding numerical value to the original value and its measurement unit.