這裡補充說明一下 @IanH 所說的内容。
您可以透過按住 Shift 鍵並點擊 專案計畫 (Project Plan) 對話框中的 管理計畫 (Manage Plans) 來從專案計畫建立基礎計畫。這會顯示一個新按鈕，讓您可以將目前的計畫儲存為基礎計畫（它會被放入 My Paratext 8 Projects 目錄中的 _StandardPlans 資料夾）。然後，您可以透過讓其他人將其複製到他們的 _StandardPlans 資料夾中，將該計畫提供給其他人。
在 9.1 版本中，還有一個新的隱藏選單選項，可讓您輕鬆建立計畫的更新。要存取這個新的選單選項，您需要在點擊 Paratext 主選單時按住 Shift 鍵，然後點擊 Paratext > Support and development > Base project plans 。這會顯示一個空白的專案計畫對話框，您可以透過點擊 管理計畫 (Manage Plans) 來載入您之前的計畫。然後您可以編輯該計畫，並將其儲存為更新，以便分發。（抱歉，建立更新的操作有點繁瑣，但這是為了幫助少數管理基礎計畫的人員，利用現有程式碼快速組裝而成的）
如果您不使用 9.1 來建立更新，則在建立計畫更新時，有一些重要的事項需要考慮：
計畫的 ID 必須相同（即檔案中 <PlanId> 元素中的 GUID）。
請確保階段、任務和檢查的 ID 相同。如果 ID 發生變更，Paratext 會將其視為不同的項目，並且不會遷移現有的進度資料。
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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