# What utility does \`doc\` provide on parameterized classes?

**URL:** <https://discourse.holoviz.org/t/what-utility-does-doc-provide-on-parameterized-classes/3678>\
**Category:** Panel\
**Created:** [May 6, 2022, 1:37am UTC](https://discourse.holoviz.org/t/what-utility-does-doc-provide-on-parameterized-classes/3678 "2022-05-06T01:37:42Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![LinuxIsCool](https://discourse.holoviz.org/user_avatar/discourse.holoviz.org/linuxiscool/32/276_2.png) [@LinuxIsCool](https://discourse.holoviz.org/u/LinuxIsCool)\
**Post date:** [May 6, 2022, 1:37am UTC](https://discourse.holoviz.org/t/what-utility-does-doc-provide-on-parameterized-classes/3678/1 "2022-05-06T01:37:42Z")

</div>

Can the doc attribute on a parameter be used to display documentation in a panel dashboard? Or perhaps a tooltip?

I forget if I have achieved this in the past, but I’m not seeing it in the documentation now.

Thanks!

 ![image](https://discourse.holoviz.org/uploads/default/original/2X/3/3fb76349cc680f9a693b1d41b540c11d25450db1.png)

 ![image](https://discourse.holoviz.org/uploads/default/original/2X/b/b0843355c61fbd2249c3e9932eea692871b9c1b1.png)

Screenshots from: [Param — Panel v0.13.0](https://panel.holoviz.org/user_guide/Param.html?highlight=display%20param%20doc)

---

<div class="post-metadata">

**Author:** ![LinuxIsCool](https://discourse.holoviz.org/user_avatar/discourse.holoviz.org/linuxiscool/32/276_2.png) [@LinuxIsCool](https://discourse.holoviz.org/u/LinuxIsCool)\
**Post date:** [May 6, 2022, 1:42am UTC](https://discourse.holoviz.org/t/what-utility-does-doc-provide-on-parameterized-classes/3678/2 "2022-05-06T01:42:32Z")

</div>

I would like to know how to achieve any of the following, automatically detected from `doc`:

1. Display docs after param names in GUI fields
2. Display docs as tooltips
3. Display docs as fields hint text

Thanks 🙂

---

<div class="post-metadata">

**Author:** ![Marc](https://discourse.holoviz.org/user_avatar/discourse.holoviz.org/marc/32/24_2.png) [@Marc](https://discourse.holoviz.org/u/Marc)\
**Post date:** [May 6, 2022, 3:33am UTC](https://discourse.holoviz.org/t/what-utility-does-doc-provide-on-parameterized-classes/3678/3 "2022-05-06T03:33:11Z")

</div>

Regarding 2. tooltips, you might find inspiration in [Tooltip POC](https://discourse.holoviz.org/t/tooltip-poc/3612)