You may not know what to do if the error message "#NULL!" occurs when carrying out calculations in a table. Today, I'll talk about why the error message #NULL! occurs and how to solve it. In general, the error message "#NULL!" is caused by the lack of the reference operator in references, resulting in an empty range of references. · The formula references continuous cell range without the correct reference operator.Take this table as an example. If we want to sum up the company'....

You know what? In WPS Writer, not only can we perform simple calculations on the table data, but apply the formulas of built-in functions. Here are a few commonly used functions for you to explore. Take this table as an example. Assume that we want to count how many Expense there are in the whole table. We can use the COUNT function to count the number of data in the table.Tips: The COUNT function in WPS can only be applied in counting number data, while the empty cells, logical value....

When we read the information of certain PDF documents, sometimes we need to mark some important paragraphs or add corresponding comments to some content. Today I would like to introduce how to add annotations to PDF documents quickly. Take this PDF document as an example. Click the Comment tab, and click the Note Mode button. At this time, a blank page appears on the right side of the document body. We select the text that needs to be annotated, click the Highlight drop-down menu, and ....

This lesson summarizes the printing problems commonly encountered in the workplace1. How to make the printer obedient, forms are printed on a sheet of paper2. How to select the designated printing area3. When the form file is very long, how to set each page has a title line4. how to set the header and footer, so that your document more professional

After editing the document, we sometimes may want to insert a blank page in the middle to supplement related content. So how can we do that? After clicking the page, click the Blank Page drop-down button in the Insert tab. Here, we can choose Vertical Text Box or Horizontal Text Box.GIf If we want to delete a blank page, place the mouse on the blank page. Now hold down the Backspace key, and press the Delete key to delete the blank page.GIf This skill could be compatible with Microsoft....

We can use the caption feature to number and annotate images, charts and other contents referenced in a document. So how do we use this feature? We take the image in this document as an example. Select the image, click References, and then click Caption to get a pop-up dialog.Click the Label pull-down to select the label you want. If none is available, you can click New Label to customize a label such as a Picture.Then select the Position of the caption. Click the Numbering button, you....

We often download some special fonts when beautifying documents.However, if the same font is not installed on other computers, it may not display correctly.So how can we solve this problem? Here are the steps to insert fonts into documents.Click Menu and then Options in the upper-left corner. On the left of the pop-up dialog, select General and Save and select Embed True Type on the Save interface, and click OK to save again. In this way, after we save the document locally and transfe....

A well-formatted presentation file can better your speech, and properly adding animation effects can help capture the audience's attention. So how can we customize the animation? Take these slides as an example.1. Click the Animation tab at the top, then the Custom Animation task pane will pop up on the right side of the screen. Now we click Selection Pane.2. In the Selection Pane task pane, we can see all the elements of the current slide page.3. Click the eye icon on the right to....