I18n is the common abbreviation for Internationalization.
Internationalization
Internationalization is the process of designing a software application
so that it can be adapted to various languages and regions without
engineering changes.
L10n
L10N is the common abbreviation for Localization.
Localization
Localization is the process of adapting software for a specific region or
language by adding locale-specific components and translating text.
project
A project in Transifex represents a software package which is usually
stored in a VCS repository. A project repository might include
multiple translatable resources including documentation and UI. It might
also ship multiple branches of its code.
project maintainer
A person responsible for the whole Project in Transifex, who has full
control over all its aspects.
slug
A short label for something, containing only letters, numbers,
underscores or hyphens. They’re generally used in URLs. For
example, in a typical Transifex project URL, the last bit (meego) is
the slug:
http://www.transifex.com/projects/p/meego/
VCS
A Version Control System (also known as source control/code management)
is a system used to manage multiple revisions of the same unit of
information. Examples of VCS systems include Bazaar, CVS, Git,
Mercurial and Subversion.