diff --git a/rtdata/languages/default b/rtdata/languages/default
index 8be55df83..d025eab36 100644
--- a/rtdata/languages/default
+++ b/rtdata/languages/default
@@ -2550,7 +2550,7 @@ TP_LOCALLAB_DENOICHRODET_TOOLTIP;Allows you to recover chrominance detail by pro
 TP_LOCALLAB_DENOICHROF_TOOLTIP;Allows you to adjust fine-detail chrominance noise
 TP_LOCALLAB_DENOIEQUALCHRO_TOOLTIP;Allows you to direct the chroma noise reduction towards either the blue-yellow or red-green colors.
 TP_LOCALLAB_DENOIEQUAL_TOOLTIP;Allows you to carry out more or less noise reduction in either the shadows or the highlights.
-TP_LOCALLAB_DENOI1_EXP;Denoise using local contrast mask
+TP_LOCALLAB_DENOI1_EXP;Denoise based on luminance mask
 TP_LOCALLAB_DENOILUMDETAIL_TOOLTIP;Allows you to recover luminance detail by progressively applying a Fourier transform (DCT). 
 TP_LOCALLAB_DENOIQUA_TOOLTIP;Conservative mode preserves low frequency detail. “Aggressive” mode removes low frequency detail.
 TP_LOCALLAB_DENOIS;Ψ Denoise
@@ -2760,10 +2760,10 @@ TP_LOCALLAB_MASKCOM_TOOLNAME;Common Color Mask  - 13
 TP_LOCALLAB_MASKCOM_TOOLTIP;A tool in its own right.\nCan be used to adjust the image appearance (chrominance, luminance, contrast) and texture as a function of Scope.
 TP_LOCALLAB_MASKCURVE_TOOLTIP;The 3 curves are set to 1 (maximum) by default:\nC=f(C) the chroma varies according to the chrominance. You can decrease the chroma to improve the selection. By setting this curve close to zero (with a low value of C  to activate the curve) you can desaturate the background in Inverse mode.\nL=f(L) the luminance varies according to the luminance, so you can decrease the brightness to improve the selection.\nL and C = f(H) luminance and chroma vary with hue, so you can decrease luminance and chroma to improve selection
 TP_LOCALLAB_MASKH;Hue curve
-TP_LOCALLAB_MASKLC_TOOLTIP;Allows you to modulate the denoise according to the mask, generated by the module "Mask and Modifications (Blur and Denoise);\n if the mask is very dark - below the threshold 'dark' - denoise will be increased.\n if the mask is clear - above the threshold 'light' - denoise will be almost cancelled.\n between the two, denoise will be maintained at the settings without mask.
-TP_LOCALLAB_MASKLCTHR;Threshold luminance "light area mask"
-TP_LOCALLAB_MASKLCTHRLOW;Threshold luminance "dark area mask"
-TP_LOCALLAB_MASKLNOISELOW;Reinforce denoise in dark area "mask"
+TP_LOCALLAB_MASKLC_TOOLTIP;This allows you to target the denoise based on the image luminance information contained in the L(L) or LC(H) mask (Mask and Modifications). The L(L) mask or the LC(H) mask must be enabled to use this function. \n if the mask is very dark - below the threshold 'dark' - denoise will be increased.\n if the mask is clear - above the threshold 'light' - denoise will be progressively cancelled.\n between the two, denoise will be maintained at the settings without mask.
+TP_LOCALLAB_MASKLCTHR;Light area luminance threshold
+TP_LOCALLAB_MASKLCTHRLOW; Dark area luminance threshold
+TP_LOCALLAB_MASKLNOISELOW;Reinforce denoise in dark areas
 TP_LOCALLAB_MASK_TOOLTIP;You can enable multiple masks for a tool by activating another tool and using only the mask (set the tool sliders to 0 ).\n\nYou can also duplicate the RT-spot and place it close to the first spot. The small variations in the spot references allows you to make fine adjustments.  
 TP_LOCALLAB_MED;Medium
 TP_LOCALLAB_MEDIAN;Median Low