Normally Four Winds displays competitive claims on the message line at the bottom of the screen. E.g., if you claim a tile for a Pung and one of your opponents claims the same tile for a Chow, Four Winds displays the other player's claim on the message line, when you make your declaration (for multi-player games, player's claim is displayed also in a small pop-up window as soon as the player has specified the claim).
You can disable the feature if you want to hide information on competitive claims.
To enable or disable information on competitive claims:
Related topics:
Arranging tiles manually
Arranging tiles for scoring
    Displaying hands after deal is over
    Showing Wall automatically at the start of the deal
    Displaying Wall and Dead Wall after deal is over
Setting the time for auto move
    Setting the discard delay
Using auto acceleration
    Showing the source of discard
Enabling or disabling overrides for displaying discards
    Enabling or disabling the Undo feature 
Enabling or disabling replay of hand
    Enabling or disabling hints
    Getting hint for robbing a Kong
Choosing random number generator