The Beebox uses preset SRX rules to segment text content into sentences and paragraphs.

SRX is a commonly used standard for coding rules to split text into small constituents such as sentences.

https://en.wikipedia.org/wiki/Segmentation_Rules_eXchange

Prepare your rules:

Create a separate SRX file per each language to customize: en.srx, fr.srx, ...
The Beebox uses general rules that are prepended to each language specific rule set. To customize the general rules create: default.srx

Install your rules:

Copy your *.srx files to "c:\beebox\data\srx"
Notes:
- The "c:\beebox" directory may be different in your installation
- The subfolders "data\srx" doesn't exist by default, you can create them by yourself.
Click the Reset Server link on the Administration page for changes to take effect:

Beebox default.srx:

The pre-installed default rules are:

<srx xmlns="http://www.lisa.org/srx20" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.0">
  <header segmentsubflows="yes" cascade="no">
    <formathandle type="start" include="yes" />
    <formathandle type="end" include="yes" />
    <formathandle type="isolated" include="yes" />
  </header>
  <body>
    <languagerules>
      <languagerule xmlns="http://www.lisa.org/srx20" languagerulename="default">
        <rule break="yes">
          <beforebreak>\s[0-9]\.</beforebreak>
          <afterbreak>\s+\p{Lu}</afterbreak>
        </rule>
        <rule break="no">
          <beforebreak>\s[\p{Nd}IiVvXxMmCc]{1,4}\.</beforebreak>
          <afterbreak>\s+\p{Ll}</afterbreak>
        </rule>
        <rule break="yes">
          <beforebreak>\s[\p{Nd}IiVvXxMmCc]{1,4}\.</beforebreak>
          <afterbreak>\s+\p{Lu}</afterbreak>
        </rule>
        <rule break="yes">
          <beforebreak>\u2029</beforebreak>
          <afterbreak />
        </rule>
        <rule break="no">
          <beforebreak>\s(\p{L}\.){2,}</beforebreak>
          <afterbreak>\s\p{Ll}</afterbreak>
        </rule>
        <rule break="no">
          <beforebreak>[\(\[\{]+\s*\.</beforebreak>
          <afterbreak>\s*[\)\]\}]+</afterbreak>
        </rule>
        <rule break="yes">
          <beforebreak>\s[\p{Ll}_]+\.</beforebreak>
          <afterbreak>\s+[\"\'\[\(\)\`]</afterbreak>
        </rule>
        <rule break="yes">
          <beforebreak>\p{L}{2,}\.[\"\'\)\`]</beforebreak>
          <afterbreak>\s[\"\'\)\`]?\p{Lu}</afterbreak>
        </rule>
        <rule break="no">
          <beforebreak>\s\p{Lu}\p{Ll}+\s\p{Lu}\.</beforebreak>
          <afterbreak>\s\p{Lu}\p{Ll}+</afterbreak>
        </rule>
        <rule break="yes">
          <beforebreak>(^|\s)+\p{L}\.</beforebreak>
          <afterbreak>\s</afterbreak>
        </rule>
        <rule break="no">
          <beforebreak>\s[^\p{L}]\p{L}\.</beforebreak>
          <afterbreak />
        </rule>
        <rule break="no">
          <beforebreak>\([^\)]{1,40}[\.\;\:]</beforebreak>
          <afterbreak>\s[^\)]{1,40}\)</afterbreak>
        </rule>
        <rule break="no">
          <beforebreak>\"[^\"]{1,60}[\;\:]</beforebreak>
          <afterbreak>\s[^\"\.]{1,120}\"</afterbreak>
        </rule>
        <rule break="no">
          <beforebreak>\s\p{Lu}\p{L}{1,7}\.</beforebreak>
          <afterbreak>\s(\p{L}{1,7}\.\s)+</afterbreak>
        </rule>
        <rule break="no">
          <beforebreak>\s\:</beforebreak>
          <afterbreak>\s+[0-9]+</afterbreak>
        </rule>
        <rule break="no">
          <beforebreak>\;</beforebreak>
          <afterbreak>\s+\p{Ll}</afterbreak>
        </rule>
        <rule break="no">
          <beforebreak>\:</beforebreak>
          <afterbreak>\s+[^\"\'\(\„].{1,40}(\.|$)</afterbreak>
        </rule>
        <rule break="no">
          <beforebreak>(^|\.)\s*.{1,15}\:</beforebreak>
          <afterbreak>\s</afterbreak>
        </rule>
        <rule break="no">
          <beforebreak>^\.{1,9}\:</beforebreak>
          <afterbreak>\s</afterbreak>
        </rule>
        <rule break="no">
          <beforebreak>\.+</beforebreak>
          <afterbreak>[\"\"\'"\)]?\s\p{Ll}</afterbreak>
        </rule>
        <rule break="no">
          <beforebreak>[\(\[\{]\s*.{0,3}[\.\?\!\;\:]+\s*[\)\]\}]\s</beforebreak>
          <afterbreak />
        </rule>
        <rule break="yes">
          <beforebreak>[\.\?\!\;\:]+[\"\"\'"\)]?</beforebreak>
          <afterbreak>\s</afterbreak>
        </rule>
        <rule break="yes">
          <beforebreak>\n</beforebreak>
          <afterbreak>\S\t+</afterbreak>
        </rule>
      </languagerule>
    </languagerules>
    <maprules>
      <languagemap languagepattern=".*" languagerulename="default" />
    </maprules>
  </body>
</srx>

The language specific rules in the Beebox can be downloaded from a Wordbee Translator platform (if you do not have one, register for a trial).

Go to Settings, then Segmentation Rules and click View to start download:

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