zulip/web/templates/compose_control_buttons.hbs

<div class="compose-control-buttons-container order-1">
    <input type="file" class="file_input notvisible" multiple />
    {{#if file_upload_enabled }}
    <div class="compose_control_button_container preview_mode_disabled" data-tippy-content="{{t 'Upload files' }}">
        <a role="button" class="compose_control_button compose_upload_file fa fa-paperclip notdisplayed" aria-label="{{t 'Upload files' }}" tabindex=0></a>
    </div>
    {{/if}}
    <div class="compose_control_button_container" data-tippy-content="{{t 'Preview' }}">
        <a role="button" class="markdown_preview compose_control_button fa fa-eye" aria-label="{{t 'Preview' }}" tabindex=0></a>
    </div>
    <div class="compose_control_button_container" data-tippy-content="{{t 'Write' }}">
        <a role="button" class="undo_markdown_preview compose_control_button fa fa-edit" aria-label="{{t 'Write' }}" tabindex=0 style="display:none;"></a>
    </div>
    <div class="compose_control_button_container preview_mode_disabled" data-tippy-content="{{t 'Add video call' }}">
        <a role="button" class="compose_control_button fa fa-video-camera video_link" aria-label="{{t 'Add video call' }}" tabindex=0></a>
    </div>
    <div class="compose_control_button_container preview_mode_disabled" data-tippy-content="{{t 'Add voice call' }}">
        <a role="button" class="compose_control_button fa fa-phone audio_link" aria-label="{{t 'Add voice call' }}" tabindex=0></a>
    </div>
    <div class="divider">|</div>
    <div class="compose_control_button_container preview_mode_disabled" data-tippy-content="{{t 'Add emoji' }}">
        <a role="button" class="compose_control_button fa fa-smile-o emoji_map" aria-label="{{t 'Add emoji' }}" tabindex=0></a>
    </div>
    <div class="compose_control_button_container preview_mode_disabled" data-tooltip-template-id="add-global-time-tooltip" data-tippy-maxWidth="none">
        <a role="button" class="compose_control_button fa fa-clock-o time_pick" aria-label="{{t 'Add global time' }}" tabindex=0></a>
    </div>
    <div class="compose_control_button_container {{#unless giphy_enabled }}hide{{/unless}} preview_mode_disabled" data-tippy-content="{{t 'Add GIF' }}">
        <a role="button" class="compose_control_button compose_gif_icon zulip-icon zulip-icon-gif" aria-label="{{t 'Add GIF' }}" tabindex=0></a>
    </div>
    <div class="show_popover_buttons">
        <div class="divider">|</div>
        {{> popovers/compose_control_buttons/compose_control_buttons_in_popover}}
    </div>
    <div class="compose_control_menu_wrapper" role="button" tabindex=0>
        <a class="compose_control_button zulip-icon zulip-icon-more-vertical hide compose_control_menu" tabindex="-1" data-tippy-content="Compose actions"></a>
    </div>
</div>