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cmvarga5
Known Participant
June 15, 2026
Answered

How to add instructional placeholder text for telephone numbers (using Custom Format)?

  • June 15, 2026
  • 2 replies
  • 42 views

I have a section where the person has to add their name, telephone number and email. I have placeholder text for both names and emails...but the telephone number one, I can’t format the phone number unless I use Special > Phone Number. Is there a way to get a placeholder text for this as well?

Correct answer JR Boulay

You shoud use an Arbitrary mask (Format: Special: Arbitrary Mask)

Use this option to define the types of characters that the user can enter in the various fields, as well as how the data is displayed in the field.
A : Accepts letters only (A to Z, a to z).
X : Accepts spaces and most printable characters, including those available on a standard keyboard and ANSI characters within the following ranges: 32 to 126 and 128 to 255.
O : The letter O accepts alphanumeric characters (A to Z, a to z and 0 to 9).
9 : Accepts only numeric characters (0 to 9).

 

2 replies

JR Boulay
Community Expert
JR BoulayCommunity ExpertCorrect answer
Community Expert
June 27, 2026

You shoud use an Arbitrary mask (Format: Special: Arbitrary Mask)

Use this option to define the types of characters that the user can enter in the various fields, as well as how the data is displayed in the field.
A : Accepts letters only (A to Z, a to z).
X : Accepts spaces and most printable characters, including those available on a standard keyboard and ANSI characters within the following ranges: 32 to 126 and 128 to 255.
O : The letter O accepts alphanumeric characters (A to Z, a to z and 0 to 9).
9 : Accepts only numeric characters (0 to 9).

 

Acrobate du PDF, InDesigner et Photoshopographe
ls_rbls
Community Expert
Community Expert
June 26, 2026

Hi ​@cmvarga5 ,

 

You can employ a combination of acrobat built-in features and some scripting.

 

In my case, my personal preference is a Custom Keystroke Script to handle the placeholder instruction text and the formatting of the texfield.

Technical Generalist