diff --git a/content/rippled.md b/content/rippled.md
index 5c0a15387c..80cc974bed 100644
--- a/content/rippled.md
+++ b/content/rippled.md
@@ -1126,8 +1126,8 @@ Each trust-line object has some combination of the following fields, although no
 | limit\_peer | String | The maximum amount of currency that the peer account is willing to owe the account |
 | no_ripple | Boolean | Whether or not the account has the [NoRipple flag](https://ripple.com/knowledge_center/understanding-the-noripple-flag/) set for this line |
 | no\_ripple\_peer | Boolean | Whether or not the peer account has the [NoRipple flag](https://ripple.com/knowledge_center/understanding-the-noripple-flag/) set for the other direction of this trust line |
-| quality\_in | Unsigned Integer | Ratio for incoming [transit fees](https://ripple.com/wiki/Transit_Fees) represented in billionths. (For example, a value of 500 million represents a 0.5:1 ratio.) As a special case, 0 is treated as a 1:1 ratio. |
-| quality\_out | Unsigned Integer | Ratio for outgoing [transit fees](https://ripple.com/wiki/Transit_Fees) represented in billionths. (For example, a value of 500 million represents a 0.5:1 ratio.) As a special case, 0 is treated as a 1:1 ratio. |
+| quality\_in | Unsigned Integer | Rate at which the account values incoming balances on this trust line, as a ratio of this value per 1 billion units. (For example, a value of 500 million represents a 0.5:1 ratio.) As a special case, 0 is treated as a 1:1 ratio. |
+| quality\_out | Unsigned Integer | Rate at which the account values outgoing balances on this trust line, as a ratio of this value per 1 billion units. (For example, a value of 500 million represents a 0.5:1 ratio.) As a special case, 0 is treated as a 1:1 ratio. |
 
 #### Possible Errors ####
 
diff --git a/content/tx_format.md b/content/tx_format.md
index 4b4b3c31f3..9856d07db6 100644
--- a/content/tx_format.md
+++ b/content/tx_format.md
@@ -390,7 +390,7 @@ When the [*tfPartialPayment* flag](#payment-flags) is enabled, the `Amount` fiel
 
 ### Limit Quality ###
 
-Ripple defines "quality" is the ratio of the numeric amout in to the numeric amount out of a conversion. For example, if you spend $2 USD to receive £1 GBP, then the "quality" of that exchange is `0.5`.
+Ripple defines the "quality" of a currency exchange as the ratio of the numeric amount in to the numeric amount out. For example, if you spend $2 USD to receive £1 GBP, then the "quality" of that exchange is `0.5`.
 
 The [*tfLimitQuality* flag](#payment-flags) allows you to set a minimum quality of conversions that you are willing to take. This limit quality is defined as the destination `Amount` divided by the `SendMax` amount (just the numeric amounts, regardless of currency). When set, the payment processing engine avoids using any paths whose quality (conversion rate) is worse (numerically lower) than the limit quality. 
 
@@ -688,8 +688,8 @@ Create or modify a trust line linking two accounts.
 | LimitAmount.currency | String | (Amount.currency) | The currency to this trust line applies to, as a three-letter [ISO 4217 Currency Code](http://www.xe.com/iso4217.php) or a 160-bit hex value according to [currency format](https://wiki.ripple.com/Currency_format). "XRP" is invalid. |
 | LimitAmount.value | String | (Amount.value) | Quoted decimal representation of the limit to set on this trust line. |
 | LimitAmount.issuer | String | (Amount.issuer) | The address of the account to extend trust to. |
-| QualityIn | Unsigned Integer | UInt32 | (Optional) % fee for incoming value on this line, represented as an integer over 1,000,000,000. A value of `0` is shorthand for no fee. |
-| QualityOut | Unsigned Integer | UInt32 | (Optional) % fee for outgoing value on this line, represented as an integer over 1,000,000,000. A value of `0` is shorthand for no fee. |
+| QualityIn | Unsigned Integer | UInt32 | (Optional) Value incoming balances on this trust line at the ratio of this number per 1,000,000,000 units. A value of `0` is shorthand for treating balances at face value. |
+| QualityOut | Unsigned Integer | UInt32 | (Optional) Value outgoing balances on this trust line at the ratio of this number per 1,000,000,000 units. A value of `0` is shorthand for treating balances at face value. |
 
 ### Trust Limits ###