diff --git a/aio/tools/transforms/templates/api/lib/paramList.html b/aio/tools/transforms/templates/api/lib/paramList.html
index 10fb182c84..0f63ad32d9 100644
--- a/aio/tools/transforms/templates/api/lib/paramList.html
+++ b/aio/tools/transforms/templates/api/lib/paramList.html
@@ -21,11 +21,12 @@
       {% if showType %}<td class="param-type"><code>{$ parameter.type $}</code></td>{% endif %}
       <td class="param-description">
       {% marked %}
-        {% if parameter.isOptional or parameter.defaultValue !== undefined %}Optional. Default is `{$ parameter.defaultValue === undefined and 'undefined' or parameter.defaultValue $}`.{% endif %}
+      {% if parameter.description | trim %}{$ parameter.description $}
 
-        {% if parameter.description | trim %}{$ parameter.description $}
-        {% elseif not showType and parameter.type %}<p>Type: <code>{$ parameter.type $}</code>.</p>
-        {% endif %}
+      {% elseif not showType and parameter.type %}<p>Type: <code>{$ parameter.type $}</code>.</p>
+      {% endif %}
+
+      {% if parameter.isOptional or parameter.defaultValue !== undefined %}Optional. Default is `{$ parameter.defaultValue === undefined and 'undefined' or parameter.defaultValue $}`.{% endif %}
       {% endmarked %}
       </td>
     </tr>{% endfor %}
diff --git a/packages/common/src/pipes/date_pipe.ts b/packages/common/src/pipes/date_pipe.ts
index 0fad70a4d5..239122eca2 100644
--- a/packages/common/src/pipes/date_pipe.ts
+++ b/packages/common/src/pipes/date_pipe.ts
@@ -113,7 +113,8 @@ export class DatePipe implements PipeTransform {
    *   shown below (all examples are given for `en-US`) or custom as shown in the table.
    *   - `'short'`: equivalent to `'M/d/yy, h:mm a'` (e.g. `6/15/15, 9:03 AM`).
    *   - `'medium'`: equivalent to `'MMM d, y, h:mm:ss a'` (e.g. `Jun 15, 2015, 9:03:01 AM`).
-   *   - `'long'`: equivalent to `'MMMM d, y, h:mm:ss a z'` (e.g. `June 15, 2015 at 9:03:01 AM GMT+1`).
+   *   - `'long'`: equivalent to `'MMMM d, y, h:mm:ss a z'` (e.g. `June 15, 2015 at 9:03:01 AM
+   * GMT+1`).
    *   - `'full'`: equivalent to `'EEEE, MMMM d, y, h:mm:ss a zzzz'` (e.g. `Monday, June 15, 2015 at
    * 9:03:01 AM GMT+01:00`).
    *   - `'shortDate'`: equivalent to `'M/d/yy'` (e.g. `6/15/15`).
@@ -124,7 +125,8 @@ export class DatePipe implements PipeTransform {
    *   - `'mediumTime'`: equivalent to `'h:mm:ss a'` (e.g. `9:03:01 AM`).
    *   - `'longTime'`: equivalent to `'h:mm:ss a z'` (e.g. `9:03:01 AM GMT+1`).
    *   - `'fullTime'`: equivalent to `'h:mm:ss a zzzz'` (e.g. `9:03:01 AM GMT+01:00`).
-   * @param timezone to be used for formatting the time. It understands UTC/GMT and the continental US time zone
+   * @param timezone to be used for formatting the time. It understands UTC/GMT and the continental
+   * US time zone
    *  abbreviations, but for general use, use a time zone offset (e.g. `'+0430'`).
    * @param locale a `string` defining the locale to use (uses the current {@link LOCALE_ID} by
    * default).
diff --git a/packages/common/src/pipes/number_pipe.ts b/packages/common/src/pipes/number_pipe.ts
index e29df041d8..2c54e235c1 100644
--- a/packages/common/src/pipes/number_pipe.ts
+++ b/packages/common/src/pipes/number_pipe.ts
@@ -35,8 +35,10 @@ export class DecimalPipe implements PipeTransform {
    * @param digitsInfo a `string` which has a following format: <br>
    * <code>{minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}</code>.
    *   - `minIntegerDigits` is the minimum number of integer digits to use. Defaults to `1`.
-   *   - `minFractionDigits` is the minimum number of digits after the decimal point. Defaults to `0`.
-   *   - `maxFractionDigits` is the maximum number of digits after the decimal point. Defaults to `3`.
+   *   - `minFractionDigits` is the minimum number of digits after the decimal point. Defaults to
+   * `0`.
+   *   - `maxFractionDigits` is the maximum number of digits after the decimal point. Defaults to
+   * `3`.
    * @param locale a `string` defining the locale to use (uses the current {@link LOCALE_ID} by
    * default).
    */
@@ -112,8 +114,8 @@ export class CurrencyPipe implements PipeTransform {
   /**
    *
    * @param value a number to be formatted as currency.
-   * @param currencyCodeis the [ISO 4217](https://en.wikipedia.org/wiki/ISO_4217) currency code, such
-   * as `USD` for the US dollar and `EUR` for the euro.
+   * @param currencyCodeis the [ISO 4217](https://en.wikipedia.org/wiki/ISO_4217) currency code,
+   * such as `USD` for the US dollar and `EUR` for the euro.
    * @param display indicates whether to show the currency symbol, the code or a custom value:
    *   - `code`: use code (e.g. `USD`).
    *   - `symbol`(default): use symbol (e.g. `$`).
diff --git a/packages/common/src/pipes/slice_pipe.ts b/packages/common/src/pipes/slice_pipe.ts
index d587190cbb..af86424e70 100644
--- a/packages/common/src/pipes/slice_pipe.ts
+++ b/packages/common/src/pipes/slice_pipe.ts
@@ -50,7 +50,8 @@ export class SlicePipe implements PipeTransform {
    *     in the list or string expression.
    *   - **a negative integer**: return the item at `start` index from the end and all items after
    *     in the list or string expression.
-   *   - **if positive and greater than the size of the expression**: return an empty list or string.
+   *   - **if positive and greater than the size of the expression**: return an empty list or
+   * string.
    *   - **if negative and greater than the size of the expression**: return entire list or string.
    * @param end the ending index of the subset to return:
    *   - **omitted**: return all items until the end.