补充一下 @IanH 所说的内容。
您可以通过按住 Shift 键的同时点击 Project Plan （项目计划）对话框中的 Manage Plans （管理计划）来从项目计划创建基础计划。这将显示一个新按钮，允许您将当前计划保存为基础计划（它将被放入 My Paratext 8 Projects 目录中的 _StandardPlans 文件夹）。然后，您可以将该计划分发给其他人，让他们将其复制到他们的 _StandardPlans 文件夹中。
在 9.1 版本中，还有一个新的隐藏菜单选项，可以轻松创建计划的更新。要访问此新菜单选项，您需要按住 Shift 键的同时点击 Paratext 主菜单，然后点击 Paratext > Support and development > Base project plans 。这将显示一个空白的项目计划对话框，您可以通过点击 Manage Plans 加载您之前的计划。然后您可以编辑该计划，并将其保存为更新，以便分发。（抱歉，创建更新的过程有点繁琐，但这是利用现有代码快速拼凑出来的，仅用于帮助管理基础计划的少数人）
如果您不使用 9.1 来创建更新，那么在创建计划更新时，有一些重要的事项需要考虑：
计划的 ID 必须相同（即文件中的 <PlanId> 元素中的 GUID）。
确保阶段、任务和检查的 ID 相同。如果 ID 发生变化，Paratext 会将它们视为不同的项目，并且不会迁移现有的进度数据。
Is it also possible to manage versions of a Base Plan that I have created myself, or only the ones that are distributed with Paratext? If I decide to make a change to the Base Plan later, is there a way in which each project can recognize it as an update to the original Base Plan?
Just to expand on what @IanH said.
You can make a base plan from a project plan by holding down Shift while clicking on Manage Plans from inside the Project Plan dialog. This will show a new button that lets you save your current plan as a base plan (it will be put into the _StandardPlans folder in your My Paratext 8 Projects directory). You can then give out that plan to other people by having them copy it into their _StandardPlans folder.
In 9.1, there is also a new hidden menu option that lets you easily create updates to your plan. To get to this new menu option, you need to hold Shift while clicking on the main Paratext menu, then click on Paratext > Support and development > Base project plans . This will show a blank project plan dialog where you can load your previous plan by clicking on Manage Plans . You can then edit the plan and then save it as an update which you can then distribute.(Sorry creating updates is a little awkward to do, but it was quickly thrown together using existing code to help only the few people that manage the base plans)
If you don’t use 9.1 to make an update, then there are some important things to consider when creating an update to a plan:
The ID of the plan must be the same (i.e. the GUID in the <PlanId> element in the file).
Make sure that the IDs of the stages, tasks, and checks are the same. If the IDs change, Paratext will consider them different and will not migrate existing progress data.
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