gawk: I18N and L10N
13.1 Internationalization and Localization
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"Internationalization" means writing (or modifying) a program once, in
such a way that it can use multiple languages without requiring further
source code changes. "Localization" means providing the data necessary
for an internationalized program to work in a particular language. Most
typically, these terms refer to features such as the language used for
printing error messages, the language used to read responses, and
information related to how numerical and monetary values are printed and
read.
Info Catalog
gawk: Internationalization
gawk: Explaining gettext