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Oracle Application Express 3.2 by Matthew Lyon, Arie Geller

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Substitution strings

Substitution strings are part of an internal APEX engine mechanism, which allows us to use pre-defined strings, and substitute them with their value, as part of the page rendering process.

As substitution strings are part of an internal mechanism, we can only use them within the Application Builder. We can't use substitution strings as part of an external JavaScript file or PL/SQL stored procedures/functions.

The Application Builder supports three types of substitution strings: APEX engine built-in substitution strings, application substitution strings, and the application or page items.

Note

Substitution strings must be named using CAPITAL LETTERS only. In any other notation, the APEX engine will treat them as regular strings. ...

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