diff --git a/PARAM/HMS/AERO/haero.param b/PARAM/HMS/AERO/haero.param
index 31e863b3721f55451adeadd1354e0cfbfd0d7f4d..88c21004b082323be95668ee96ce08e6a23fcdb7 100644
--- a/PARAM/HMS/AERO/haero.param
+++ b/PARAM/HMS/AERO/haero.param
@@ -30,7 +30,7 @@ haero_npe_thresh = 0.5
 ; FIX ME! This value is for the SHMS!
 haero_diff_box_zpos = 231.0
 
-; Number of regions in which tracks can be matched to
+; Number of regions in which tracks can be matched too
 haero_num_regions = 1;
 
 ; phgcer_region: 8 values for each region
diff --git a/PARAM/SHMS/HGCER/phgcer.param b/PARAM/SHMS/HGCER/phgcer.param
index 2738bf76bceb9dfd9d43f0b9345b754f37e7f8a3..1193ec76c4ef1b8b39901f008b5218d58bcad5eb 100644
--- a/PARAM/SHMS/HGCER/phgcer.param
+++ b/PARAM/SHMS/HGCER/phgcer.param
@@ -4,19 +4,23 @@ phgcer_tot_pmts = 4
 ; Garth H. gain calibration from run 486, March 9 2017
 phgcer_adc_to_npe = 1/436., 1/393., 1/364., 1/372.
 
+; Track matching reduced chi2 cut values
 phgcer_red_chi2_min = 0.0
 phgcer_red_chi2_max = 25.0
 
+; Track matching beta cut values
 phgcer_beta_min = 0.0
 phgcer_beta_max = 1.2
 
+; Track matching normailized energy (E/p) cut values
 phgcer_enorm_min = 0.0
 phgcer_enorm_max = 1.5
 
+; ADC time window cut values used to select "good" ADC events
 phgcer_adcTimeWindowMin = 500.
 phgcer_adcTimeWindowMax = 2500.
 
-; Threshold for good hit (for measureing effic.)
+; ; NPE Threshold for "good" hit (for measureing effic.)
 phgcer_npe_thresh = 0.5
 
 ; Guess from Dwg. 67165-E-00001 R0
@@ -24,6 +28,7 @@ phgcer_mirror_zpos = 175.1
 
 phgcer_num_regions = 4;
 
+; Number of regions in which tracks can be matched too
 ; phgcer_region: 8 values for each region (1 per mirror + sum)
 ; central x,y,dx,dy values and x,y,dx,dy half widths.
 ; Defined in clomuns, region 1, region 2, region 3, region 4...
diff --git a/PARAM/SHMS/NGCER/pngcer.param b/PARAM/SHMS/NGCER/pngcer.param
index a91731353124d2c6f9799fe75c6ed21e42333606..1afa702d1ea85910fa6115e107b8a8803a6e4999 100644
--- a/PARAM/SHMS/NGCER/pngcer.param
+++ b/PARAM/SHMS/NGCER/pngcer.param
@@ -1,26 +1,32 @@
 ; Number of noble gas Cherenkov PMT's
 pngcer_tot_pmts = 4
 
+; Noble gas cherenkov gain factors
 pngcer_adc_to_npe = 1/1000., 1/1000., 1/1000., 1/1000.
 
+; Track matching reduced chi2 cut values
 pngcer_red_chi2_min = 0.0
 pngcer_red_chi2_max = 25.0
 
+; Track matching beta cut values
 pngcer_beta_min = 0.0
 pngcer_beta_max = 1.2
 
+; Track matching normailized energy (E/p) cut values
 pngcer_enorm_min = 0.0
 pngcer_enorm_max = 1.5
 
+; ADC time window cut values used to select "good" ADC events
 pngcer_adcTimeWindowMin = 500.
 pngcer_adcTimeWindowMax = 2500.
 
-; Threshold for good hit (for measureing effic.)
+; ; NPE Threshold for "good" hit (for measureing effic.)
 pngcer_npe_thresh = 0.5
 
 ; Guess from Dwg. 67165-E-00001 R0
 pngcer_mirror_zpos = -89.1 
 
+; Number of regions in which tracks can be matched too
 pngcer_num_regions = 4;
 
 ; pngcer_region: 8 values for each region (1 per mirror + sum)