1 – 2 – Callout! Graphic Labeling Made Easy

With technical documentation, one thing is pretty much a certainty: lots of pictures. After all, you have to show again and again which product component is where, in which position you need to put your hand, and what you have to do. Unlike many other texts (e.g., marketing), the illustrations in technical documentation therefore usually need one or more labels, leaving graphics with many guide lines often look like a spiky hedgehog. However, these labels can cause quite a bit of trouble in day-to-day editing. If you want to save yourself this hassle, callout graphics are the answer.

With Callout Designer, SCHEMA ST4 has been offering a tool that greatly simplifies the labeling of graphics for many years. Let’s take a closer look at what basic procedures it offers to make graphics and explanations work better together.

There are three main methods for labeling graphics with Callout Designer: with labels, with text fields, or with variables. Each of these methods has its own advantages. However, it is important that all work in Callout Designer is carried out in a defined language context (e.g., “English”).

Using the “Labels” option, you can insert fields with consecutive numbering into the graphic. The fields can be freely positioned and provided with leading lines. In the “Text” properties dialog, you can then assign a descriptive text to the respective label number, e.g., “Cylinder”. The main attraction of working with labels becomes apparent when you insert a callout graphic into a node: SCHEMA ST4 (from version 2020 onwards) will then automatically create a legend table that lists all item numbers and the corresponding texts.

Of course graphics can also be labeled by integrating the descriptive text directly into the image. This is especially recommended when only a few parts of the image need to be labeled. In SCHEMA ST4’s Callout Designer, you can use text field labeling to do this.

However, you do need to be a little careful with this method. Different languages have different run lengths, meaning that content can accidentally “run out” of the text field and the image during translation, causing information to be lost as a result. To prevent this, there are various setting options for the text field which allow you to specify, for example, the direction in which the field expands or the size and font in which text is displayed depending on the language.