You can, but not in a straightforward manner.

Propercasing is turned on by adding:

            <assertion name="propercase"/>

to an archetype node. E.g for product.medication ensures that the product name is propercased using:

<node name="name" path="/name" type="java.lang.String" minCardinality="1">
    <assertion name="propercase"/>
</node>

You can edit the archetype to remove this assertion.

Alternatively, If you have a few acronyms you use all the time, you can edit propercase.properties and add exceptions for each one.

This file is located in <TOMCAT_HOME>/webapps/openvpms/WEB-INF/classes/org/openvpms/web/resource/localisation/propercase.properties

Replace <TOMCAT_HOME> with the root directory of your tomcat installation.

By default it contains:

space.1 = &
spaceBefore.1 = (
spaceAfter.1 = )
spaceAfter.2 = .
startsWith.1 = Mac
startsWith.2 = Mc
startsWith.3 = d'
startsWith.4 = (
startsWith.5 = `
startsWith.6 = "
contains.1 = -
contains.2 = '
endsWith.1 = 's
exceptions.1 = von
exceptions.2 = van
exceptions.3 = de
exceptions.4 = la
exceptions.5 = da
exceptions.6 = di
exceptions.7 = PO Box
exceptions.8 = La Trobe
exceptions.9 = Macquarie

You need to add more exceptions:

exceptions.10 = FIV
exceptions.11 = THIS TEXT SHOULD ALWAYS BE UPPERCASE
exceptions.12 = ETC

If you change propercase.properties or reload your archetypes, you need to restart tomcat for the changes to be picked up.

In both cases, you will need to re-apply your changes when you move to a new version of OpenVPMS.

-Tim