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copied!<p>Ah, you've run into Rebol 3's policy to "do what you say, it can't read your mind". R3's <code>Needs</code> header is part of its module system, so anything you load with <code>Needs</code> is actually imported as a module, even if it isn't declared as such.</p> <p>Loading scripts with <code>Needs</code> is a quick way to get them treated as modules even in the original author didn't declare them as such. Modules get their own contexts where their words are defined. Loading a script as a module is a great way to use a script that isn't that tidy, that leaks words into the shared script context. Like your <code>%test-child.r</code> script, it leaks the word <code>child</code> into the script context, what if you didn't want that to happen? Load it with <code>Needs</code> or <code>import</code> and that will clean that right up.</p> <p>If you want a script treated as a script, use <code>do</code> to run it. Regular scripts use a (mostly) shared context, so when you <code>do</code> a script it has effect on the same context as the script you called it from. That is why the <code>child: now</code> statement affected <code>child</code> in the parent script. Sometimes that's what you want to do, which is why we worked so hard to make scripts work that way in R3.</p> <p>If you are going to use <code>Needs</code> or <code>import</code> to load your own scripts, you might as well make them modules and export what you want, like this:</p> <pre><code>REBOL [ type: module title: {test child} exports: [child] ] child: now ?? child </code></pre> <p>As before, you don't even have to include the <code>type: module</code> if you are going to be using <code>Needs</code> or <code>import</code> anyway, but it would help just in case you run your module with <code>do</code>. R3 assumes that if you declare your module to be a module, that you wrote it to be a module and depend on it working that way even if it's called with <code>do</code>. At the least, declaring a <code>type</code> header is a stronger statement than not declaring a <code>type</code> header at all, so it takes precedence in the conflicting "do what you say" situation.</p> <p>Look here for more details about how the module system works: <a href="https://stackoverflow.com/questions/14420942/how-are-words-bound-within-a-rebol-module/14552755#14552755">How are words bound within a Rebol module?</a></p>

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